chemistry pahang 2012

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CHEMISTRY

Kertas 1

OKT/NOV 2012

1 }{JAM

PEPERIKSAAN PERCUBAAN SPM TAHUN 2012

CHEMISTRY

Tingkatan 5

Kertas 1

Satu jam Lima Bel as Min t.

JANGAN BUKA KERTAS SOALAN SEHINGGA DIBERITAHU

INFORMATION FOR CANDIDATES

MAKWMATUNTUK CALON

1. This question paper consisits of 50 questions.Kertas soalan ini mengandungi 50 soalan

2. Answer all questions

Jawab semua soalan.

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3. Each question is followed by four alternative answers,A,B,C or D. For each question, choose one

Answer only. Blaken your answer on the objective answer sheet provided .

· Tiap-tiap sao/an diikuti o/eh empat pilihan jawapan, iaitu A,B,C dan D. Bagi setiap soalan, pil ih

Satu jawapan sahaja. Hitamkan jawapan anda pada kertas jawapan objektif yang disediakan.

4. If you wish to change your answer, erase the blackened mark that you have made. Then blacken

Kertas soa/an ini mengandungi 28 halaman bercetak

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1. Which of the following statement is true regarding chemical?

Yang manakah di antara berikut adalah benar merujuk kepada bahan kimia?

A. Each matter is a chemical.

Setiap jirim adalah bahan kimia .

B. Air is not considered a chemical.

Udara tidak dianggap bahan kimia.

C. Chemical are only found in laboratories.

Bahan kimia hanya dijumpai di dalam makmal.

D. All chemicals are dangerous substances.

Semua bahan kimia adalah berbahaya.

2. Diagram 1 shows the electron arrangement of an atom of element P.

Rajah 1 menunjukkan susunan elektron bagi atom unsur P.

Diagram 1

Rajah 1

What is the number of valence electrons in atom P ?Berapakah bilangan elektron valen bagi atom P?A 7

8 6c 5

- 0 4

3. The following statements are about atom M and Z.

• ~ t a a n berikut adalah mengenai atom M dan Z.

• -1 · •. . : . - . : . n ~ : ~ - . : : .

:' ~ - - • Electron arrangement of atom M is 1

~ ' - , ~ Susunan elektron atom M ialah 1\f c ~ • Proton number of atom Z is 6~ ., () /-j, Nombor proton atom Z ialah 6

• ~ ~ ~ / '1.-.if~ f ~ i formula of the compound formed between M and Z?

a ~ a h formula bagi sebatian yang terbentuk antara M dan Z?

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3

4. Table 1 shows the proton number of elements P, Q, RandS .Jadual 1 menunjukkan nombor proton bagi unsur P, Q, R dan S.

Element pUnsur

Proton number11

Nombor proton

Q

14

Table 1Jadua/1

R

16

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s

19

What is the arrangement of elements S, T, U and V in ascending order of atomic size?Apakah susunan saiz atom secara menaik bagi unsur-unsur S, T, U dan V ?

A P, Q,R,S

B P,S,Q,R

C S,R,Q,P

D R,Q,P,S

5. Table 2 shows the melting and boiling points of substances W, X, Y and Z .Jadua/ 2 menunjukkan takat /ebur dan takat didih untuk bahan W, X, Y dan Z.

Substance

Bahan

wXy

z

Melting point I °C

Takat lebur I °C

-59

48

-110

128

Table 2

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Boiling point I °C

Takat didih I °C

60

130-70

470

Which of the following substances has the highest kinetic energy at room temperature?






6.

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Which compound in the table below is correctly matched with its relative molecular

mass?

Sebatian yang manakah di dalam jadual di bawah dipadankan dengan betul dengan

jisim molekul relatif masing-masing?

(RAM: H,1; C,12 ; N,14; 0,16; Na, 23; P, 31; S, 32; Ca, 40; Fe, 56)

A

B

I

II

IllIV

- -

I and Ill

II and IV

Compound

Sebatian

Ca3(P04)z

C,4H1aN20s

FeS04.7H20

C,sH3,COONa

I---

III

Relative molecular mass

Jisim molekul relatif

c

D

310

294

278

266

I, II and Ill

I, Ill and IV

7. The ions present in aqueous sodium chloride solution include

!on-ion yang hadir dalam larutan natrium klorida termasuklah

A Na+ and Cl"

B Na+, Cl", H+ and 0 2-

C Na+, Cl", Wand OH- .

D Na+, Cl", H30+ and 0 2-

8. A compound with formula X2S04 has a relative formula mass of 174. What is the

relative atomic mass of X?

(RAM: 0,16;8,32) .

Suatu sebatian dengan formula X2S04 mempunyai jisim formula relatif sebanyak 174.

Apakah jisim atom relatif bagi X?

(JAR :0 ,16; S,32)

A

B

39

52

© 2012 Hak Cipta MPSM Pahang

c

D

78

104

XO + C02

[ Lihat halaman sebelah





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Persamaan di atas menunjukkan penguraian garam karbonat bagi logam X apabila

dikenakan tindakan haba. Jika 0.05 mol xo terhasil, hitungkan jisim bagi xco3 yang

terurai.

(JAR : C, 12 ; 0,16; X,64).

A 0.08 g

B 1.60 g

c 3.20 9

D 6.20 g

10. Aluminium oxide has both acidic and basic properties, therefore it is

Aluminium oksida mempunyai kedua-dua sifat asid dam bes, oleh itu aluminium oksida

ialah

A. a base oxide

oksida bes

B. an acid oxide

oksida asid

C. a metalloid oxide

oksida metaloid

D. an amphoteric oxide

oksida amfoterik

11 . The diagram 2 shows the electron arrangement of a compound formed between atoms Pand Q.

Gambar rajah 2 menunjukkan susunan electron bagi sebatian yang terbentuk antara atom

.P dengan atom Q.


Diagram 2Rajah 2

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6

Which of the following statements is true about the compound?Antara pemyataan berikut yang manakah benar ten tang sebatian itu?

A. It is an ionic compound

Sebatian itu adalah sebatian ion

B. The compound is formed by covalent bondsSebatian itu terbentuk melalui ikatan kovalen

C. The compound has a high boiling pointSebatian itu mempunyai takat didih yang tinggi

D. The compound is formed by electron transferSebatian itu terbentuk melalui pemindahan elektron

12. A restaurant owner wants to use colourful electric lamps to attract customers.

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Which of the following substances A, B, C or D in the Periodic Table is suitable to be used

in the lamps?

Seorang pemilik restoran ingin menggunakan fampu efektrik yang berwama warni untuk

menarik perhatian pelanggan.

Antara unsur A, 8, C dan D dalam Jaduaf Berka/a berikut yang manakah sesuai

digunakan untuk lampu itu.

A D

B c

The diagram 3 shows the electron shells in the substance formed between atoms of






7

Diagram 3

Rajah 3

What is the electron arrangement of atom Y?

Apakah susunan elektron bagi atom Y?

A 2.4

B. 2.8

C. 2.8.4

D. 2.8.8

14 . In Periodic Table, each elements in the group have

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Dalam Jadual Berka!a, unsur-unsur dalam satu kumpulan tertentu mempunyai

similar physical characteristicsifat fizik yang sama.

II similar chemical characteristic

sifat kimia yang sama.

Ill equal number of proton in the nucleus of an atom

bilangan proton yang sama dalam nukleus atomnya.

IV equal number of electron in the outermost shell of an atombi/angan e/ektron yang sama di petala /uar atomnya.

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8

15 . Diagram 4 shows information of element X and element Y.

Rajah 4 menunjukkan maklumat bagi unsur X dan unsur Y.

Diagram 4Rajah 4

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Which of the following electron arrangement for the substances formed when the element

X and element Y react?

Antara berikut, yang manakah susunan elektron bagi sebatian yang terbentuk apabila

unsur X dan unsur Y bertindak balas?

A. [ 0 J ~ lB.

C.






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16 . Which of the following are true about ionic compound?Antara pernyataan berikut. yang manakah benar tentang sebatian ion?

Dissolve in water

Larut dalam air

II Produced from the reaction between metal and non metal elementsTerbentuk daripada tindak balas antara unsur logam dengan unsur bukan /ogam

Ill Formed through transfer of electrons between the atomTerbentuk melalui perpindahan e/ektron antara atom-atom.

IV Conduct an electricity in a solid stateMengalirkan arus elektrik dalam keadaan pepejal

A I and II onlyI dan II sahaja

B Ill and IV onlyIll dan IV sahaja

C I, II, and Ill onlyI, II, dan Ill sahaja

D I, II, Ill, and IVI, II, Il l, dan IV

17 . Which substances are electrolytes?Bahan-bahan manakah adalah elektrolit?

GlucoseG/ukosa

II AcetamideAsetamida

Ill Lead(ll) bromidePlumbum(//) bromide


C. I and Ill

I dan Ill

D. Ill and IV

Ill dan IV






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18. Which of the following voltaic cells has the lowest voltage?

Manakah antara sel kimia berikut mempunyai voltan yang paling rendah ?

Positive terminal Negative terminal

Terminal positif Terminal negatif

A Copper Zinc

Kuprum l inkB Argentum Magnesium

Arg_entum Magnesium

c Lead Zinc

Plumbum l inkD Copper Magnesium

Kuprum Magnesium

19 . Diagram 5 shows the set up of the apparatus of a simple chemical cell. The reading on

the voltmeter is 0.3 V .

Rajah 5 menunjukkan susunan radas bagi satu sel kimia ringkas. Bacaan voltmeter ialah

0.3 V.

Zinc plate

Kepingan

zink

Diagram 5Rajah 5 ·

Iron plateKepingan ferum

lron(ll) sulphate

Larutan(/1) sulfat

Which of the following will increase the read ing on the voltmeter?

Manakah antara kaedah berikut dapat menambahkan bacaan voltmeter?

Increase the volume of iron(ll) sulphate solution?

Tambahkan isipadu larutan ferum(/1) sulfat

, - ; . f ~ ~ t i t u t e the iron plate with a silver plate

· .,.....

GafltiJ<an kepingan ferum dengan kepingan argentumsrt.-.'1 .){"' -;,f . _. . 0 ·,;: 1t

~ 111-l - Use.a more dilute iron(ll) sulphate solution

' ~ ? ~ - ~ t ~ ' ' l a r u t ~ n ferum(/1) sulfat yang lebih cair

, ~ S ~ - ' ( b t J t u t e the zmc plate w1th a magnes1um plate· · Gantikan kepingan zink dengan kepingan magnesium






A. I and II only

I dan II sahaja

B. II and IV only

II dan IV sahaja

11

C. I and Ill only

I dan I ll sahaja

D. II, Ill dan IV sahaja

1/, Ill dan IV sahaja

20. Amni are going to coat an iron key with silver by electrolysis. The anode should

Amni akan menyadur kunci besi dengan perak melalui elektrolisis. Anod adalah

A. Silver plate C. Iron plate

Plat perak Plat besi

B. Silver nitrate D. Iron key

Argentum nitrat Kunci besi

21 . Which of the following statements is true about all bases?

Manakah antara pernyataan berikut benar tentang semua bes?

A. React with acids

Bertindak balas dengan asid

B. Dissolves in water

Larut dalam air

C. Contain hydroxide ions

Mengandungi ion-ion hidroksida

D. Have alkalines properties

Mempunyai sifat alkali

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22. Diagram 6 shows the set-up of apparatus used to investigate the ability of various

solutions to conduct electricity.

Rajah 6 menunjukkan susunan radas yang digunakan untuk mengkaji kebolehan

pelbagai larutan untuk mengalirkan arus elektrik.


- : .

Diagram 6

Rajah 6

Bulb

Mento/

Solution XLarutan X






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20 cm3of 1.0 mol dm·

3larutan natrium k/orida bertindak batas lengkap dengan larutan

argentum nitrat berlebihan. Hitungkan jisim mendakan yang terbentuk.

[Jisim atom relatif Ag=108; C/=35.5]

A

8

3.78 g

3.87 g

25. Which of the following salts is insoluble?Antara berikut yang manakah garam tak terlarut?

A Barium sulphateBarium su/fat

B Potassium carbonate

Kalium karbonat

c Silver nitrateArgentum nitrat

D Ammonium carbonateAmmonium karbonat

cD

2.78 g

2.86 g

26. Diagram 7 shows the set-up of apparatus to prepare a sulphate sal t using the

precipitation reaction.

Rajah 7 menunjukkan susunan radas dalam penyediaan garam sulfat denganmenggunakan tindak balas pemendakan.

Solution X ~Larutan X , .- .·

. I

©2012 Hak Cipta MPSM Pahang

StirKacau

Diagram 7

Rajah 7

Precipitate

Mendakan

[ Lihat hataman sebetah





14

Solution X isLarutan X adalah

hydrochloric acid Ill lead(ll) nitrateasid hidroklorik plumbum nitrat

II barium chloride IV calcium chloridebarium klorida kalsium klorida

A I and IV only c II , Ill and IV onlyI dan IV sahaja II, Ill dan IV sahaja

8 I, II, and Ill only D I, II , Ill and IVI, II, dan Ill sahaja I, II, Ill dan IV

27 . The following information shows the properties of salt X.

Maklumat berikut menunjukkan sifat-sifat garam X.

• Releases brown gas and a gas which lights up glowing splinter

when heated strongly.

Membebaskan gas perang dan gas yang menyalakan kayu uji

berbara apabila dipanaskan dengan kuat.

• Residue after heating is brown when it is hot and yellow when it iscold .

Menghasilkan baki yang berwarna perang semasa panas dan

kuning semasf3 sejuk

C. Lead(ll) nitratePlumbum(//) nitrat

D. Lead(ll) carbonatePlumbum(//) karbonat

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28. Diagram 8 shows tests performed on compound G.Rajah 8 menunjukkan ujian yang dijalankan ke atas sebatian G.

l GI

Added with dilute hydrochloric acid andfiltered

kdanambah dengan asid hidrokloridituraskan

Precipitation Solution

Mendakan Larutan

Added w th ammonia solutionessntil exc

Tambah larutan ammonia

anerlebih

White precipitatedissolve

Mendakan putih

Diagram 8

Rajah 8

Iarut

G is a mixture of two types of salts. Which of the following is found in G?

G ialah campuran dua jenis garam. Antara berikut manakah terdapat dalam G?

A Silver sulphate and copper(ll) carbonateArgentum sulfat dan kuprum(/1) karbonat

B Lead(ll) nitrate and zinc carbonatePlumbum(//) nitrat dan zink karbonat

C Lead(ll) nitrate and aluminium nitratePlumbum(//) nitrat dan aluminium nitrat

~ a g n e s i u m sulphate and lead(ll) carbonate

! J t } a g n e s i u m sulfat dan plumbum(//) karbonat1 _ - •






16

29. What is the type of glass used to make glass containers?Apakah jenis kaca yang digunakan untuk menghasilkan bekas kaca?

A Borosilicate glass

Kaca borosilikat

B Soda lime glass

Kaca soda kapur

C Fused glass

Kaca silica terfakur

D Lead crystal glass

Kaca plumbum

30 . Statues or monuments are made of bronze. What is the main metal in bronze?Patung atau tugu dibuat daripada gangsa. Apakah logam utama dalam gangsa?

A Iron

Besi

B Aluminium

Aluminium

C Magnesium

Magnesium

D Copper

Kuprum

31. The following equation represents the reaction between calcium carbonate and

hydrochloric acid.

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P. ~ berikut mewakili tindak balas antara kasium karbonat dan asid hidroklorik.






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A Decrease the size of calcium carbonateMengurangkan saiz kalsium karbonat

8 Increase the temperature of the mixtureMeningkatkan suhu campuran

C Increase the volume of hydrochloric acidMeningkatkan isipadu asid hidroklorik

D Increase the concentration of hydrochloric acidMeningkatkan kepekatan asid hidroklorik

32 . Which of the following is a role of catalyst to increase the rate of reaction?

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Antara berikut, yang manakah adalah peranan yang dimainkan oleh mangkin dalam

meningkatkan kadar tindak balas?

A It increase the kinetic energy of reacting particle

Ia boleh meningkatkan tenaga kinetik zarah bahan tindak balas

8 It lowers the activation energy in the reactionIa merendahkan tenaga pengaktifan di dalam tindak balas

C It decrease the number of collision per second in the reactionIa mengurangkan jumlah perlanggaran per saat di dalam tindak balas

D It increase the surface area of the reacting particleIa merendahkan luas permukaan zarah bahan tindak balas

33 . Diagram 9 shows the apparatus for an experiment to determine the rate of reaction

between sodium thiosulphate solution and sulphuric acid.

Rajah 9 menunjukkan susunan radas bagi eksperimen untuk menentukan kadar tindak

balas antara larutan natrium tiosulfat dan asid sulfurik.

. ......

x mark·,, TandaX


Diagram 9

Rajah 9

Sodium thiosulphatesolution + sulphuric acidNatrium tiosulfat + asid

sulfurik






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Which of the following combination of conditions will make the mark X to disappear the

fastest?

Antara kombinasi keadaan berikut yang manakah mengambil masa yang paling singkatuntuk tanda X hilang daripada penglihatan?

A

B

cD

Sulphuric acid

Asid sulfurik

Volume

lsipadulcm3

10

10

10

10

ConcentrationKepekatanlmoldm·3

1.0

1.0

1.0

1.0

Sodium thiosulphate solution

Larutan natrium tiosulfat

Volume Concentrationlsipadu lcm

3Kepekatanlmo/dm·3

50 0.5

50 0.5

50 1.0

50 1.0

34. Diagram 10 shows an energy level for the reaction X + Y -7 Z.

Rajah 10 menunjukkan aras tenaga untuk tindak balas X + Y -7 Z.

Energy

Tenaga

Diagram 10

Rajah 10

c

D

130 kjmol·1

830 kjmol"1

Temperature

Suhu I °C

30

40

50

30

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19

35. Table 3 shows the total volume of gas collected at regular interval in a reaction.

Jadual 3 menunjukkan jumlah isipadu gas terkumpul pada seta masa tertentu.

Time,s0 30Masa,s

Volume of gas,cm3

0 2.0lsipadu gas,cm3

What is the average rate of reaction?

Berapakah kadar tindak balas purata?

A

B

60 90

3.7 5.2

Table 3

Jadua/3

c

D

120 150 180

6.4 7.3 8.6

36 . Which of the following pairs of compounds are in the same homologous series?

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210

8.6

Manakah antara pasangan sebatian berikut berada dalam siri homolog yang sama?

Compound 1 Compound 2

Sebatian 1 Sebatian 2

A c2H4

c3 H sB C2 Hs c3 H s

c C2 Hs OH CH3C02H

D C2HsOH C2 Hs COOH

37. The following equation represents a reaction for industrial preparation of Propanol.~ berikut mewakili tindak balas penyediaan etanol secara industri. '' .~ ~ ~ ' \ . ..~ ~ ~ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - .

P + H20 CH3 CH2 CH2 OH

Catalyst X, 30CfC/60atm

[ mangkin X, 30CfC I 60 atm]






What is P and catalyst X?

Apakah P dan mangkin X?

! A

B

c

D

p

C2H4

C3Hs

C2H4

C3Hs

20

Catalyst XMangk/nX

Platinumplatinum

Nickelnikel

Nickelnikel

Phosphoric acid

Asid fosforik

38. Diagram 11 shows the formation of vulcanized rubber from natural rubber.

Rajah 11 menunjukkan pembentukan getah tervulkan daripada getah asli.

-C • ~ c "c--- Vulcanization

Pemvu/kanan

Diagram 11Rajah 11

Which of the following statement is true about the above diagram.

Antara penyataan berikut yang manakah benar mengenai rajah di atas.

A Substance Y is disulphur dichloride solutionBahan Y adalah larutan disulfur diklorida

' . f ! . ! _ ~ V U I C a n i z e d rubber is less easily OXidized

, • G.eiah tidak tervulkan tidak mudah dioksidakan", ~ .f· . t . • • '

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~ C0

_ ~ ~ n i z e d rubber becomes soft and sticky easily in organic solvent.~ f ~ ~ ~ _ : l ~ ~ tervulkan mudah menjadi lembut dan me/ekit dalam pe/arut organik.

·,<!:! ~ s ~ b s t a n c e Y is hydrogen sulphide acid· · .Bahan Y adalah asid hidrogen su/fida.






21

39. Diagram 12 below shows the structural formula of an ester molecule

Rajah 12 di bawah menunjukkan formula struktur bagi suatu molekul ester.

0

ItCH3 - CH2- C - 0 -CH1

Diagram 12Rajah 12

Which of the following reactants is used to prepare the above ester

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Antara yang berikut, manakah bahan tindak yang digunakan untuk menyediakan ester

seperti di atas.

A Propanoic acid and methanol

Asid propanoik dan metana/

8 Methanoic acid and propanol

Asid metanoik dan propanol

C Ethanoic acid and ethanol

Asid etanoik dan etanol

D Butanoic acid and methanol

Asid butanoik dan metanol

40. Which of the following equations represent a redox reaction?

Antara persamaan berikut, manakah mewakili tindak balas redoks?

CuO + H2S04 ---+CuS04 + H20

II 2HCI + Zn ---+ ZnCb + H2

Ill Ag+ + Cr ---+ AgCI

2CI-+S

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41 . Diagram 13 shows the apparatus arrangement to investigate the oxidation and reduction

in terms of the transfer of electrons at a distance.

Rajah 13 menunjukkan susunan radas bagi mengkaji pengoksidaan dan

penurunan berdasarkan pemindahan elektron pada satu jarak.

Iron (II) sulphateFerum (II) sulfat

Diagram 13

Rajah 13

Acidified PotassiumManganate (VII) solution

Kalium mangganat(V/1)

berasid

Dilute sulphuric acid--+-----Asid sulfuric cair

Which of the following statement is true about the reaction occurs.

Antara berikut pernyataan manakah adalah benar tentang tindak balas yang berlaku.

A lron(ll) ion, Fe2+ is reduced

Jon Ferum(/1) mengalami penurunan Fe2+

. B Electrons flow from electrode P to Q

Efektron mengalir dari efektrod P ke Q

C The purple colour of solution becomes green






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42 . Diagram 14 below shows the mechanism of rusting.

Rajah 14 di bawah menunjukkan mekanisma pengaratan.

Water dropletTitisan air

Diagram 14

Rajah 14

Which of the following equation occurs at the anode?

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Antara pemyataan berikut yang manakah menunjukkan persamaan yang berlaku di

anod?

A Fe ~ F e + 2e·

B 02 + 2H20 + 4e· ~ 40H-

C 40H- ~ 02 + 2H20 + 4e·

D Fe2

+ + 2e·~

Fe

43 . .Table 4 below shows the results of an experiment to investigate the effect of metals on

the rusting of iron.






Test tubeTabung uji

X

y

24

ProcedureProsedur

' Iron nail is coiled

with metal P_.,.......

'. . '

Paku besi dililit[,..

~ -uengan logam P

.

:--. Iron nail is coiledwith metal Q

~ , _ _ Paku besi dililildengan logam Q

Table 4

Jadua/4

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Result after 3 daysKeputusan selepas 3 hari

Iron nail did not rust

Paku besi tidak berkarat

Iron nail rusted

Paku besi berkarat

Based on the result above, arrange iron, P and Q in decreasing order of electropositivity.

Berdasarkan keputusan di atas, susun besi, P dan Q mengikut turutan menurun

. keelektropositifannya.

A






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44. Diagram 15 below shows the apparatus set up to measure the heat energy given out in

the reaction between magnesium and iron sulphate solution. The experiment is repeated

by using zinc and iron sulphate solution.

Rajah 15 di bawah menunjukkan susunan radas untuk mengukur tenaga haba yang

dibebaskan di dalam tindak balas antara magnesium dan larutan besi sulfat. Eksperimen

ini diulang dengan menggunakan zink dan larutan besi sulfat.

Magnesium p o w d e r ~Serbuk magnesium \ \, I Plastic cup

I •l

r-- Cawan plastik

Iron (II) sulphate solutionLarutan besi (II) su/fat

Diagram 15Rajah 15

Which of the following has to be constant for the reaction?

Antara yang berikut, manakah yang perlu dikekalkan dalam tindak balas ini?

A The size of the spatulaSaiz spatula

B The position of the thermometerKedudukan termometer

C The volume of the iron(ll) sulphate solutionlsi padu larutan ferum(/1) sulfat

fl ... ,. •

: , ; . ~ ~ ~ t i m e taken to read the temperature of the mixture

~ i f t J 1 . masa membaca suhu campuran. ;s:; . )(






26

45. The equation represents the combustion of propane.Persamaan berikut mewakili pembakaran propana.

C 3H a+ 50 2 ~ 4H20 + 3C02

l!.H= -2230 kJ mol-

1

What is the mass of propane needed to produce 44600 J of energy?Apakah jisim propana yang diperlukan untuk menghasilkan 44600 J tenaga?

[Relative atomic mass: C, 12; H, 1]

[Jisim atom relatif: C = 12, H = 1]

A 0.02 g

B 0.44 g

c 0.88 9

D 1.00 g

4541/1

46. The reaction between aqueous sodium hydroxide and dilute hydrochloric acid is an

exothermic reaction. Which of the following graphs shows the change in temperature

when sodium hydroxide solution is slowly added to dilute hydrochloric acid until it is very

much in excess?

Tindak balas eksotermik akan berlaku jika natrium hidroksida akueus berlindak balas

dengan asid hidroklorik cair. Graf yang manakah di bawah menunjukkan perubahansuhu apabi/a natrium hidroksida dicampurkan perlahan-lahan sehingga berlebihan?

A temperature/suhu

oc . : t . · : . ~ ~ ~ t : ~ ~ 5 ~ : : , ~ q ~ : : r ~ ~ ; , : ~c temperature/suhu

oc

volume of NaOH/isi padu NaOH- -

volume of NaOH/isi padu NaOH

Dtemperature/suhuoc

volume of NaOH/isi padu NaOH . volume of NaOHiisi padu NaOH

© 2012 Hak Cipta MPSM Pahang [ Lihat ha/aman sebe/ah





27 4541/1

47. An acid HX and an alkali YOH, both with the same concentration, are mixed in different

volume ratios as shown in the table below. Which of the following sets of mixture will

produce the highest rise in temperature?

Satu asid HX dan satu alkali YOH yang mempunyai kepekatan yang sama dicampurkan

pada nisbah isipadu seperti yang ditunjukkan pada jadual di bawah. Antara larutan set

berikut yang manakah akan menghasilkan kenaikan suhu yang paling besar?

Vblume o ( H X m - ~ m of YO,I:f{cm 3) - .

"" • •• <.,., .· , . ; . ·> · ""' ! , -

· - . ~ S . i p a d u ·voH (cm3J/sipadu H>((cm3) / ,

<

,_ : ·- '.,

A 90 10

B 70 30

c 50 50

D 40 60

48. The diagram 16 below shows the structure of a soap molecule. Which of the following

statements is not true?

Rajah 16 di bawah menunjukkan struktur satu molekul sabun. Manakah antara

penyataan yang berikut adalah tidak benar?

©2012 Hak Cipta MPSM Pahang

Diagram 16

Rajah 16






28

49. Which of the following is not true about antibiotics?Antara berikut yang manakah tidak benar mengenai antibiotik?

A They are used to destroy the growth of bacteria.Ia digunakan untuk memusnahkan pertumbuhan bakteria.

8 They are used to treat bacterial diseases .Ia digunakan untuk merawar penyakit disebabkan bakteria.

C Penicillin and streptomycin are two common antibiotics.

Penisilin dan streptomisin adalah dua anitibiotik yang umum.

D They are effective against fungal and viral infections.Ia berkesan dalam melawan jangkitan kulat dan jangkitan virus.

50. Which of the following statements are true?

Antara penyataan berikut, yang manakah benar?

Codeine is an example of an antibiotics.

Kodeina adalah satu contoh antibiotik.

II A tranquilizer is used for treating anxiety.Trankuifizer digunakan untuk mengubati keresahan.

Ill Streptomycin is used to treat psychiatric patients.Streptomisin digunakan untuk merawat pesakit psikiatrik.

IV A diabetes mellitus patient can be treated by using ins·ulin .

4541/1

Seorang pesaki t kencing manis boleh dirawati dengan menggunakan insulin

A

B

I and II

I dan II

I and IllI dan Il l


c

D

II and IVII dan IV

Ill and IVIll dan IV

END OF QUESTION

SOALAN TAMAT






4541/2

Chemistry

Kertas 2Okt/Nov

2% jam

Nama: ..... ... .... ............ ........ ... ........................... ....... ...... ... .... ..

Kelas : .. ... .. ..... ..... .. ........... .... ............ ... .. ...... ..................... ...... .

MPSM PAHANG

PEPERIKSAAN PERCUBAAN SPM 2012

TINGKATAN 5

CHEMISTRY

Kertas 2

Dua jam tiga puluh min it

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

4541/2

DO NOT OPEN THIS QUESTION PAPER UNTIL YOU ARE TOLD TO DO SO

1. Tuliskan nama dan kelas anda pada

ruangan yang disediakan.

2. Kertas soalan ini adalah da/am dwibahasa.

3. Soa/an dalam bahasa /nggeris mendahului

soalan yang sepadan dalam bahasa

Melayu.

4. Calon dibenarkan menjawab keseluruhanatau sebahagian soalan sama ada dalam

bahasa lnggeris atau bahasa Melayu.

@ 2012 Hak Cipta MPSM Pahang

Untuk Kegunaan Pemeriksa

Kod Pemeriksa :

Sahagian So alan Markah Markah

Penuh Diperoleh

1 92 9

A3 10

4 10

5 11

6 11

B7 20

8 20

c9 20

10 20

Jumlah






1.

y

Section A

Sahagian A

(60 Marks)

(60 Markah)

Answer all the questions in this section.

Jawab semua soalan dalam bahagian ini.

HydrogenationPropene

PenghidrogenanPropena

Dehydration

Pendehidratan

Diagram 1Rajah 1

X

4541/2

Esterification

· Pengesteran

z

Ethanoic acid

As1d etano1k

Diagram 1 shows the flow chart of a ser ies of changes that occur between some

members of the homologous series.

Rajah 1 menunjukkan carta alir bagi suatu perubahan yang berlaku antara ahli-ahli siri

homolog.

a) Write the molecular formula of propene.

Tuliskan formula molekul bagi propena.

b) (i) Write the general formula homologous series of compound X.

Tuliskan formula am bagi siri homolog bagi bahan X.

[1 mark]

[1 markah]

• f. . f'.,. ">.o · ··· .•.. . . . • . . • • •• •• • • • • •• • • • • •• • •• • •• • • • ••• •• • 0 •• •••• •• • • • • • • 0 • • • • • •••• •• • ••• • • •••••• • • •• • • • • •• •• • ' • • • • •~ . ~ - ~ , : _ ; [1 mark]

7'it · ~ : · · : \ [1 markah]~ to) ;:-(ii) vyii{e the chemical equation when compound X changes to propene .

-;I, / h

\ P o · ~ . 1_, _.,Jq;jilskan persamaan kimia apabila bah an X bertukar kepada propena.- - - - 7 o c ~ .:./

. - ~ ~ _ . - - 4 -

(1 mark]

[1 markah]

@ 2012 Hak Cipta MPSM Pahang 2 [ Lihat halaman sebelah]





4541/2

c) Draw the structural formula for one of the isomers of compound X. Name the isomer.

Lukis formula struktur bagi salah satu isomer sebatian X. Namakan isomer tersebut.

d) {i) Name compound Y.

Namakan bahan Y.

[2 marks][2 markah]

[1 mark][1 markah]

(ii) Write the chemical equation for the hydrogenation of propene to produce

compound Y.

Tuliskan persamaan kimia bagi penghidrogenan propena untuk menghasilkan

bahan Y.

e) X will change to Z through esterification reaction .

[2 marks]

[2 markah]

X akan bertukar kepada Z melalui tindak balas pengesteran .

Name product Z.

Namakan bahan Z.

~ ~ ~ .. ······ · " ' ' ' ' " '"'""''""''' ' '"'"'"'"''""'"''''""' ' '''"'" ' "'''"''""'' ' ' ' " ' " " " '[1 mark)

[1 markah]

.

@ 2012 Hak Cipta MPSM Pahang 3 [ Lihat halaman sebelah ]





4541/2

2. Diagram 2 shows the chemical symbols which represent three elements P, Q and R.

The letters used are not the actual symbols of the elements.

Rajah 2 menunjukkan simbol kimia yang mewaki/i tiga unsur P, Q dan R. Huruf yang

digunakan adalah bukan simbol sebenar unsur itu.

15p

2

17 Q5

Diagram 2

Rajah 2

a) (i) What is meant by proton number?

Apakah maksud bagi nombor proton?

(ii) State the proton number for atom P.

Nyatakan nombor proton bagi atom P.

b) What is represented by the number 35 for the element Q?

Apakah yang diwakili oleh nombor 35 bagi unsur Q?

@ 2012 Hak Cipta MPSM Pahang 4

17 R37

[1 mark]

{1 markah]

[1 mark][1 markah]

[1 mark]{1 markah]

[ Lihat halaman sebelah ]





4541/2

(ii) State one uses of isotopes in dialy life.

Nyatakan satu kegunaan isotop dalam kehidupan seharian.

d) (i) Write the electron arrangement of atom Q.

Tuliskan susunan elektron bagi atom Q.

(ii) Determine the number of valence electron for atom Q.

Tentukan bilangan e/ektron valens bagi atom Q.

(iii) Draw the electron arrangement for atom R.

Lukiskan susunan e/ektron bagi atom R.


[1 mark][1 markah]

[1 mark]

[1 markah]

[1 mark]

[1 markah}

(2 marks][2 markah]






PeriodKala

3. Figure 1 shows part of the Periodic Table of the Element.

P, Q, T, Y and Z do not represent the actual symbol of the elements.

Rajah 1 menunjukkan sebahagian daripada Jadua/ Berkala Unsur.

P, Q, T, Y and Z tidak mewakili simbol sebenar unsur berkenaan.

, -

T

GroupKump /an

Figure 3

Rajah 3

y

4541/2

~

p Q

z

a) Using the letters in the Periodic Table of the Elements in Figure 3, answer the

following questions.

Dengan menggunakan huruf-huruf yang terdapat da/am Jadual Berkala Unsur pada

Rajah 3, jawab soalan berikut.

(i) State the element that exists as diatomic molecule .

Nyatakan unsur yang wujud sebagai molekul dwiatom.

(ii) Choose an element that is a noble gas.

• • . ( '> satu unsur gas adi.~ " ' A " " - - . . . , - 4 ~. . Y ' : r•\v

[1 mark][1 markah]

'b'1 . \ { · ~ · t...o . " ,.: ,., " . " ." ." " ." .. " ......... .. ... .... ... .. .... .. .... .. ... .. " . " " .... ... .. . " . " ." .... " . " . " ..

\?..\ ;- . .. · [1 mark]~ , '·}. /- /1. · [1markah]

. ~ 9 - , . - ··' }YJ'.q; ;.vi}-- _. ... A"-< t7r · >.;_ A_,

·::?-- :--·






(iii) Which element forms an amphoteric oxide?

Unsur yang manakah membentuk oksida bersifat amfoterik?

b) Arrange P, Q, T, Y, and Z according to the increase in atomic size.

Susun P, Q, T, Y and Z mengikut pertambahan saiz atom.

c) State the number of valence electrons for an atom of element P.

Nyatakan bilangan elektron valens bagi atom unsur P.

d) Z is more electronegative than T. Explain why.

Z /ebih elektronegatif daripada T. Jelaskan mengapa.

e) Write the formula for the ion formed from an atom of element Y.

Tuliskan formula bagi ion yang terbentuk daripada atom unsur Y.

4541/2

(1 mark][1 markah]

[1 mark]{1 markah]

[1 mark]{1 markah]

[2 marks]{2 markah]

[1 mark]{1 markah]

(1 mark]{1 markah]






g) State one special characteristic of transition elements.

Nyatakan satu ciri istimewa bagi unsur peralihan.

4541/2

[1 mark]

[1 markah]

4. A student carried out an experiment of electrolysis of copper(ll) sulphate solution using

carbon P electrode and carbon Q electrode as shown in Diagram 4 below.

Seorang pelajar telah menjalankan satu eksperimen elektrolisis larutan kuprum(/1) sulfat

dengan menggunakan elektrod karbon P dan elektrod karbon Q seperti ditunjukkan pada

Rajah 4 di bawah.

Copper(ll) sulphatesolution

Larutan kuprum {II)

sulfat

Ammeter


Diagram 4

Rajah 4

8

Switchsuis

( Llhat halaman sebelah ]





b) (i) State the observation obtained at carbon electrode Q.

Nyatakan pemerhatian yang diperoleh di elektrod karbon Q.

4541/2

[1 mark]

[1 markah]

(ii) The intensity of blue colour of copper(ll) sulphate solution decreases. Why?

Keamatan warna biru larutan kuprum(ll) sulfat didapati berkurang. Mengapa?

[1 mark][1 markah]

c) Write the half equation for the reaction that takes place at electrode P.

Tuliskan setengah persamaan bagi tindak balas yang berlaku di elektrod karbon P.

[1 mark]

[1 markah]

d) If the experiment is repeated using copper electrode, state the observation at:

Jika eksperimen diu/ang dengan menggunakan elektrod kuprum, nyatakan

pemerhatian pada:

(i) anode.

anod.


[1 mark]

{1 markah]






4541/2

e) If the student wants to electroplate an iron spoon with copper metal by electrolysis,

draw a labelled diagram to show the apparatus arrangement used by the student.

Jika pe/ajar tersebut ingin menyadurkan sebatang sudu besi dengan /ogam kuprum

secara elektrolisis, lukiskan gambar rajah berlabel untuk menunjukkan susunan radas

yang digunakan oleh pe/ajar itu.

[2 marks]{2 markah]

f) The experiment is repeated by using 0.0001 mol dm-3 sodium chloride solution. The

table below shows the ions which gather at electrode P.

Eksperimen ini diulangi dengan menggunakan larutan natrium klorida 0.0001 mol

dm-3. Jadual di bawah menunjukkan ion-ion terkumpu/ di elektrod P.

Ions which gather at electrode P

ion terkumpul di elektrod P

Chloride ions

ion klorida

Hydroxide ion

ion hidroksida

Table 1

Jadua/1

Selectively discharged ions

Dinyahcas secara pilihan

, - - t { : . . : _ ~ ~ ~ tick (I ') in the table 1 to select the ion which will be selectively discharged

7 : ; . _ ~ 0 a(e1e&trode P.) ' Q · . .

~ ~ Tlr,·':. : (/') da/amJ·adua/1 untuk memilih ion yang akan dinyahcas secara pilihan· ~ ) ' : -- "' . .Q& ._..- ;.,. A,,, Cjc : <;_S:"a f 'elektrod P.

- ~ - ·


[1 mark]

{1 markah]

[ Lihat halaman sebelah]





4541/2

5. Question 5 is about the titration between sulphuric acid and sodium hydroxide

solution.

Soalan 5 berkaitan dengan pentitratan antara asid sulfurik dan larutan natrium

hidroksida.

Several drops of phenolphthalein indicator are added into 25 cm3 of 0.5 mol dm·3

sodium hydroxide solution in a beaker.

Beberapa titis penunjuk feno/ftalein ditambah kepada 25 cm3 /arutan natrium

hidroksida berkepekatan 0.5 mol dm·3

di dalam sebuah bikar.

a) State the change on the colour of the phenolphthalein in the sodium hydroxide

solution at the end point.

Nyatakan perubahan warna feno/ftalein dalam larutan natrium hidroksida pada takat

akhir.

b) State the meaning of the end point of titration .

Nyatakan maksud bagi takat akhir pentitratan.

[1 mark][1 markah]

[1 mark)

[1 markah)

c) Write a chemical equation to represent the reaction between sulphuric acid and

~ • ~ € ! ; 1 _ .hydroxide solution.~ ~ - - " "·':·· ,., , "

7-"'"i · T u / i s k h ersamaan kimia mewakili tindak balas antara asid sulfurik dan larutan

~ c - i'' .' .;: ' #(l tnum_ .droks1da.'{l-\ '\.1} ~·<;:-', ". r '''V l

:...;.,...... - ~ . A, ; _ , ~ ~ ~ .. ;;-..;....... ....... ... ..... .. .. ......... .... ........... ...... ..... .. . .. .. ... ..... .... .... ....... .. ........ ...... ..


[2 marks][2 markah}






d) Name the products formed.

Namakan hasil yang terbentuk.

4541/2

[1 mark][1 markah]

e) 0.25 mol dm"3 of sulphuric acid is needed to completely neutralize the sodium

hydroxide solution. Calculate the volume of sulphuric acid.

0.25 mol dm·3 asid sulfurik diperlukan untuk meneutralkan sepenuhnya /arutan

natrium hidroksida. Kirakan isipadu asid sulfurik .

[3 marks]

[3 markah]

f) Predict the volume of acid used if the experiment is repeated using 0.25 mol dm·3

hydrochloric acid.

Anggarkan isipadu asid yang digunakan sekiranya eksperimen diulangi

menggunakan 0.25 mol dm·3 asid hidrok/orik.

~ . . t t ~ e x a m p l e s of the application of neutralisation in the field of health

. ~. f i"f]rikanifil. contoh aplikasi proses peneutralan dalam bidang kesihatan

.> ·-<

[1 mark]{1 markah]

~~ ~ 9 ; . ; - : } j · · · · · · · ..................... ......... ......... ........................................... ... ..... .. .... ........."-..::::! ~ ~ .......... .... .. .... ......... ... ······..... .... .. ....... .. ........... ......... .............................. .. ....


[2 marks]

[2 markah]






4541/2

f) Predict the volume of acid used if the experiment is repeated using 0.25 mol dm-3

hydrochloric acid.

6.

Anggarkan isipadu asid yang digunakan sekiranya eksperimen diulang menggunakan

0.25 mol dm-3 asid hidroklorik.

[1 mark][1 markah1

Rusting of iron is a corrosive reaction which happen naturally.

Pengaratan besi ada/ah suatu tindak ba/as kimia yang bo/eh

berlaku secara semulajadi

a) What is meant by redox reaction .

Apakah yang dimaksudkan tindakbalas redoks.

b) State the conditions for iron rust naturally.

Nyatakan keadaan untuk besi berkarat secara semulajadi

[ 1 mark 1[1 markah 1

[ 1 mark 1[1 markah 1

c) Iron undergoes oxidation reaction during rusting. Write half equation for the oxidation

of iron.

semasa berkarat. Tu/iskan setengah persamaan






4541/2

d) Draw a labeled diagram for rusting of iron to show the condition of rusting of iron ,

the flow of electron, anode and cathode.

Lukiskan gambarajah berlabel bagi proses pengaratan besi yang menunjukkan

syarat untuk pengaratan besi , pengaliran elektron, anod dan katod.

[3 mark](3 markah]

e) Describe the transfer of electron and the reaction that take place at the cathode after

iron is oxidized .

Huraikan pemindahan elektron dan tindak balas yang berlaku pada katod selepas

besi dioksidakan.

(f) Identify two methods of controlling the rusting of iron.

[ 3 marks](3 markah]

' "';: -'' . '. . ' . ' , ' ' : • .•• 0 •••••••••••• •• •••• • •••• •• • •• •• •••••• 0 ••• • • •• • ••••••••••••••••••• 0 • • • • •• • •••••••••••••• '. ' • ' ••••\.;)






Section 8

Sahagian B

(20 Marks)

(20 Markah)

Answer anyone

question from this section.Jawab mana-mana satu soalan dari bahagian ini.

4541/2

7. A student has carried out an experiment to construct an ionic equation for the formation

of lead (II) iodide. Seven test tubes of the same size were labelled 1 to 7. A fixed volume

of 5.0 cm3

of 1.0 mol dm·3

potassium iodide solution was placed in each test tube. 0.5 cm 3

of 1.0 mol dm·3

lead (II) nitrate solution was added into test tube 1. 1.0 ct:n 3 into test tube 2

and so on until 3.5 cm3

was added into test tube 7. The heights of the precipitate formed

in each test tube were measured.

Seorang pelajar te/ah menjalankan satu eksperimen untuk membina persamaan ion bagi

pembentukan plumbum (II) iodida. Tujuh buah tabung yang sama saiz dilabelkan

dengan 1 hingga 7. lsipadu tetap 5.0 cm3

larutan kalium iodida 1.0 mol dm·3 diletakkan

da/am setiap tabung uji 0.5 cm3

larutan plumbum (II) nitrat 1.0 mol dm·3 ditambah ke

dalam tabung uji 1, 1.0 cm3 ke dalam tabung uji 2, dan seterusnya sehingga 3.5 cm3

ditambah ke dalam tabung uji 7. Tinggi mendakan yang terbentuk da/am setiap tabung

uji diukur.

The results are shown in Table 7.

Keputusan ditunjukkan dalam Jadua/ 7.

Test tube

Tabung uji

Volume of 1.0 moldm·3 lead (II) ni trate

solution I cm3

f;t· -. r ~ plumbum (II) nitra/1.01: { ! i f ( ~ ~. \ . \"'

7:;: 1HeiJr¢ of i i p l ~ 1em~ rn n g g e n d a ~ f ! . em. \,; }

'{;._:Y' - • 7.v. ...- ·-' /.


1

0.5

1.1

Table 7

Jadua/7

15

2 3 ~ - - 5 6 7

1.0 1.5 2.0 2.5 3.0 3.5

2.2 3.4 4.4 5.5 5.5 5.5






4541/2

a) Based on table 7, plot a graph of the height of the precipitate against volume of lead

(II) nitrate solution on the graph paper.

Berdasarkan Jadual7,

plotkan graf tinggi mendakan melawan isipadu larutanplumbum (II) nitrat pada kertas graf.

b) (i) Write the chemical equation for the formation of lead (II) iodide.

Tuliskan persamaan kimia bagi pembentukan plumbum(//) iodida.

[3 marks]

[3 markah}

[2 marks]

[2 markah)

(ii) Determine the volume of lead (II) nitrate solution that had reacted completely with5.0 cm

3of 1.0 mol dm-3 potassium iodide.

Tentukan isipadu larutan plumbum (II) nitrat yang telah bertindak balas lengkap

dengan 5. 0 cm3 larutan kalium iodida 1.0 mol dm- 3.

[3 mark]

[3 markah}

(iii) Using the volume obtained in (b)(ii), calculate the number of moles of lead (II) ions

and iodide ions that are required for the formation of lead (II) iodide .

Dengan menggunakan isipadu yang dipero/ehi dalam (b)(ii), hitungkan bilangan

mol bagi ion plumbum (II) dan ion iodida yang diperlukan untuk pembentukan

plumbum (II) iodida .

[2 marks}

[2 markah}

c) The following flow chart in diagram 7 shows the formation of copper (II) salt solution~ ~ of its reactions.• • 'r.-,-"\ '\,1

~ ~ ~ a m rajah 7 menunjukkan p ~ n g h a s i l a n sejenis larutan garam kuprum (II)

~ \ dan '-'satut e..'hi tmdak balas larutan garam Jtu.• tl ~ ~

· ; ; _ ~ 0 ·-· r · ·{l./,1

' · - · ~ .. ~. tier ;·:c:..;;*'~ ~ ~ ~ \ . . , . _ .






Salt of X compound

Sebatian garam X

+ sulphuric acid

+ asid sulfurik

Copper (II) salt solution + water+ gas Z

Larutan garam kuprum (II) + air + gas Z

Heat

Panaskan

+ Barium nitrate solution

+ Larutan Barium nitrat

Y precipitate

Mendakan Y

Based on Diagram 7:

Berdasarkan Rajah 7.·

Diagram 7

Rajah 7

(i) Identify salt X, gas Z and Y precipitate.

Kenai pasti garam X, gas Z dan mendakan Y.

GasZ

GasZ

4541/2

Pass through

lime water

Alir ke dalam

air kapur

Lime water turns cloudy

Air kapur keruh

[3 marks]{3 markah]

(ii) Write a chemical equation for the formation of Y precipitate.

Tuliskan persamaan kimia bagi pembentukan mendakan Y.

[2 marks]

[2 markah]

~ : •__Jtl__ (II) salt solution is a soluble salt. Describe chemical test to verify the

.' · ~ n a n d anion in the compound.7.""Y t " " \ ' " · ~ t -

~ Lc;t f an garam kuprum (II) adalah garam terlarutkan. Huraikan ujian kimia, ' ' } '7.0 : ; : : ; . . . _ ~ U ~ [ P menentusahkan kation dan anion dalam sebatian tersebut.

*-'::! Oo ~~ ; . ; ; : [5 marks][5 markah]






4541/2

8. Diagram 8 shows the set-up of the apparatus to study the heat of displacement .

Rajah 8 menunjukkan susunan radas bagi mengkaji haba penyesaran.

Beaker that contain

2 g zinc powder -------f.,: ::::::::(excess)

Bikar yang mengandungi 2g

serbuk zink (berlebihan)

<n---- Thermometer

Termometer

' I Polystyrene cup

Cawan polistren

50.0 cm3

copper(ll) sulphate= ~ ~ ~ ~ ~ ~ ~ J { ~ ~ . J - - - - solution 0.1 mol dm-3

50 .0 cm3 /arutan kuprum (II)sulfat 0. 1 mol dm-

3

-- ------Diagram 8

Rajah 8

The following data was obtained in table 8 :

Data yang berikut te/ah dipero/ehi di dalam jadua/ 8 :

Initial temperature of copper(ll) sulphate solution

Suhu awa/larutan kuprum{/1) sulfat

The highest temperature of the mixture

Suhu tertinggi campuran

Table 8

Jadua/8


29.0 °C

34 .0 °C

[3 marks]

[3 markah)






b) (i) Write an ionic equation for the displacement reaction above.

Tuliskan persamaan ion bagi tindak balas penyesaran di a las.

4541/2

[2 marks]

{2 markah]

(ii) Calculate the heat of displacement for this experiment if excess zink powder

is added to 50cm3 copper(ll) sulphate solution 0.1 mol dm-3 .

[Specific heat capacity of solution= 4.2 Jg-1°C .,Density of solution=1.0 gcm-3]

Hitungkan haba penyesaran bagi eksperimen ini jika serbuk zink ditambah

secara berlebihan kepada 50 cm3

larutan kuprum(/1) sulfat 0. 1 mol dm-3.

{Muatan haba tentu larutan =4.2 Jg-1°C. Ketumpatan /arutan =1.0gcm-3

)

[4 marks]

[4 markah]

(iv) Why is the value of heat of displacement obtained in the experiment is less than

the theorical value?

State two precautions that should be taken during the experiment.

Mengapakah nilai haba penyesaran yang diperoleh dalam eksperimen ini adalah

kurang daripada nilai teori?

Nyatakan dua langkah berjaga-jaga yang perlu diambil ketika menjalankan

eksperimen ini.

[3 marks][3 markah]

(v) Predict the value of temperature change when 0.2 mol dm-3

of copper (II)

sulphate solution is used to replace 0.1 mol dm -3 of copper (II) sulphate solution.

Explain your answer.

Rama/kan nilai perubahan suhu apabi/a larutan kuprum (II) sulfat 0.2 mol

dm-3 digunakan bagi menggantikan larutan kuprum (II) sulfat 0.1 mol dm -3.~ ~ ~ ..


[2 marks]

{ 2 markah)






c) (i) Draw an energy level diagram for the reaction.

Lukiskan gambar rajah aras tenaga bagi tindak balas ini.

(ii) Explain the diagram based on:

Terangkan gambar rajah tersebut berdasarkan:

• Type of reaction.

Jenis tindak balas

• Energy content of the reactants and products.

4541/2

[3 marks]

[3 markah}

Kandungan tenaga bagi bahan tindak balas dan hasi/ tindak balas.

• Formation and breaking down the bond .

Pembentukan dan pemutusan ikatan.


[3 marks]

[3 markah]






Section C

Sahagian C

[20 marks]

{20 markah]

Answer any one question from this section

Jawab mana-mana satu soalan dari bahagian ini

9. (a) Diagram 9.1 shows the label on a pack of food.

Rajah 9. 1 menunjukkan label bagi suatu bungkusan makanan.

"YAMMY BAKED BEANS"

Ingredients:

Beans, sugar, tomato puree, salt and spice, permitted modifiedstarch.

Net Weight120 gram

Bahan.,..bahan

Kacang, gula, pu ri tomato, garam dan rempah, kanj idiubahsuai

yang dibenarkan.

Diagram 9.1

Rajah 9.1

Beret bersih120 gram

. . r ; , . ~ .~ · · - = . , . . ~ -5!'"

4541/2

,..... ..."\ ;..

: t ; w o types of food additive found on the label and state the function for"· "';,\'

12 0 eac!lrtype of food additives.

~ ~ ~ - ' ~ 1 - f J J dua jenis bahan tambah makanan yang terdapat pada label itu dan

~ ( . r ' D o ; , i C : : . " " V / a fungsi bagi setiap bahan tambah makanan tersebut.~ ~ . Y . , · · '


[4 marks)[4 markah]






~Soap

Sabun

Experiment IEksperimen I

Hard waterAir fiat

ClothKain

Oily stainKesan minyak

Before experiment

Sebelum eksperimen

Hard water

Air fiat

ClothKain

Hard waterAir fiat

ClothKain

Experiment IEksperimen I

Oily stain remainKesan minyak kekal

Oily stain removeKesan minyak

hifang

After experiment

Se/epas eksperimen

Diagram 9.3

Rajah 9.3

4541/2

~Detergent

Detergen

Experiment II

Ekperimen II

Experiment II

Eksperimen II

«:J. "": s . i 1 ~ the observation, compare and explain the effectiveness of the cleansing

7::.-..:;' ,.taction 6 ~ ~ detergent and soap in hard water

~ r pemerhatian,banding dan terangkan keberkesanan tindakan pencucian~ 9 : ' ' f ./!"f,i.t~ R : _ < &0

lfif!.ta:;.Ef:tJetergen dan sabun dalam air fiat.. ~ ; ; - . . , . , ; : . : < ~


[ 10 marks]

{10 markah]






4541/2

10. a) (i) What is the meaning of rate of reaction?

Apakah yang dimaksudkan dengan kadar tindak balas?

(ii) Give four factors that effect the rate of reaction.

[1 mark][1 markah)

Berikan empat faktor yang mempengaruhi kadar sesuatu tindak balas.

(2 marks][2 markah]

b) Aisyah is preparing her father's favorite drink, coffee. She heat the water

which is used to dissolve the coffee powder and sugar.

Aisyah ingin menyediakan minuman kegemaran bapanya, air kopi. Dia

memanaskan air yang hendak digunakan untuk membancuh serbuk kopi dan

gula.

Base on the above statement, what is the purpose for Aisyah to heat the water which

is used to dissolve the coffee powder and sugar. Your explanation should include the

collision theory.

Berdasarkan pernyataan di atas, apakah tujuan Aisyah memanaskan air yang

hendak digunakan untuk membancuh serbuk kopi dan gula? Huraikan jawapan anda

berlandaskan teori perlanggaran.


[5 marks]

{5 markah]






c) When sodium thiosulphate, Na 2S20 3 solution reacts with

sulphuric acid,H2S04, precipitate is formed.

Apabila /arutan natrium tiosu/fat, Na 2S20 3 bertindak balas

dengan asid sulfurik, H2S04 , suatu mendakan terbentuk

4541/2

Based on the statement above, name the precipitate formed and describe an

experiment to investigate the effect of temperature on the rate of reaction between

sodium thiosulphate, Na2S203 solution and sulphuric acid, H2S0 4.

Berdasarkan pernyataan di atas, namakan mendakan yang terbentuk dan huraikan

satu eksperimen makmal untuk mengkaji kesan suhu terhadap kadar tindak balas di

antara larutan natrium tiosulfat, Na2Sz03 dengan asid su/furik, H2S04.

Your answer must include the following :

Jawapan anda perlu mengandungi perkara berikut:

•

•

•

..

A list of material

Senarai bahan

A list of apparatus

Senarai radas

Procedure of the experiment

Prosedur eksperimen

Conclusion

Kesimpu/an

END OF THE QUESTION PAPER

KERTAS SOALAN TAMAT

[12 marks]

{12 markah}






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lanspm.blogspot.com



MAKLUMATUNTUKCALON

1. Kerlas soalan ini mengandungi tiga bahagian: Sahagian A, Sahagian S dan

Sahagian C.

4541/2

2. Jawab semua soalan dalam Sahagian A. Tulis jawapan bagi Sahagian Ada/am ruangyang disediakan dalam kerlas soalan.

3. Jawab satu soa/an daripada Sahagian S dan satu soalan daripada Sahagian C.

Tu/iskan jawapan bagi Sahagian B dan Sahagian C pada halaman bergaris di

bahagian akhir kerlas soalan ini. Jawab Bahagian B dan Bahagian C dengan terperinci.Anda bo/eh menggunakan persamaan, gambar rajah, jadual, graf dan cara lain yang

sesuai untuk menje/askan jawapan anda.

4. Tunjukkan kerja mengira, ini membantu anda mendapatkan markah.

5. Sekiranya anda hendak membatalkan sesuatu jawapan, buat garisan di atas jawapanitu.

6. Rajah yang mengiringi soalan tidak di/ukis mengikut skala kecua/i dinyatakan .

7. Markah yang diperuntukkan bagi setiap soa/an atau ceraian soalan ditunjukkan da/amkurungan.

8. Masa yang dicadangkan untuk menjawab Sahagian A ialah 90 minit, Sahagian S ialah30 minit dan Sahagian C ialah 30 minit.

9. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogramkan.

10. Serahkan semua kertas jawapan anda di akhir peperiksaan.

11 . JADUAL SERKALA UNSUR DISEDIAKAN Dl HALAMAN 26.


1. This question paper consists of three sections: Section A, Section S and Section C.

2. Answer all questions in Section A. Write your answers for Section A in the spaces

provided in the question paper.3. Answer one question from Section B and one question from Section C. Write your

answers for Section B and Section C in the lined pages at the end of the question

paper. Answer questions in Section Band Section C in detail. You may use equations,diagrams, tables, graphs and any other suitable method to explain your answer.

4. Show your working in calculations , it may help you to get marks .

5. If you Wish to cancel any answer, neatly cross out the answer .

6. The diagrams in the questions are not drawn to scale unless stated.

7. Marks allocated for each question or parts there of are shown in brackets.

8. % ~ ~ s u g g e s t e d to complete Section A is 90 minutes, Section S is 30 minutes and~ ~ ~ 30 minutes... ,-4• ,........ '

43/ Y((>U may ~ non-programmable scientific calculator.~ 0. ~ ~ in all answer sheets at the end of the examination .

~ - 1 _ . THii;filER tq9tC TABLE OF ELEMENTS IS PROVIDED ON PAGE 26.~ ~ ' · · r-!V I.~ v f i - _ . . , ,,A

·. <.. oc ··= c$ ~ - ~ - - ~






4541/3

CHEMISTRY

Kertas 3

OKT 2012

1 1/2 JAM

NAMA

KELAS

GURU


TINGKATAN 5

CHEMISTRY

Paper 3

1 hour 30 minutes

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

4541/3

DO NOT OPEN THIS QUESTION PAPER UNTIL YOU ARE TOLD TO DO SO

1. Tuliskan nama, kelas dan nama guru andapada ruangan yang disediakan.

2. Kertas soalan ini adalah dalam dwibahasa .

3. Soalan di bahagian atas adalah dalamBahasa lnggerls. Soalan di dalam tulisancondong adalah dalam Bahasa Melayu yangsepadan.

4. Calon dibenarkan menjawab keseluruhan atausebahagian soa/an sama ada dalam BahasaMelayu atau Bahasa lnggeris.

5. Calon dikehendaki membaca maklumat dihalaman 2.

Kod PemeriksaSoalan

1

2

3

JUMLAH

Markah Markah

Penuh Dioeroleh

18

15

17

Kertas soalan ini mengandungi 14 halaman bercetak

@ 2012 Hak Cipta MPSM Pahang [Lihat halaman sebelah





2 4541/3

MAKLUMAT UNTUK CALON

1. Jawab semua soa/an.

2. Jawapan kepada Soalan 1 dan soalan 2 hendaklah ditulis dalam ruangan yangdisediakan dalam kertas soalan.

3. Jawapan kepada Soalan 3 hendaklah ditulis pada he/aian tambahan. Anda bo/ehmenggunakan persamaan, gambar rajah, jadua/, graf dan cara lain yang sesuai untukmenjelaskan jawapan anda.

4. Tunjukkan kerja mengira, ini membantu anda mendapatkan markah.

5. Sekiranya anda hendak membatalkan sesuatu jawapan, buat garisan di atas jawapan itu.

6. Rajah yang mengiringi tidak dilukiskan mengikut ska/a kecua/i dinyatakan.

7. Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan di dalam

kurungan.

8. Masa yang dicadangkan menjawab Soa/an 1dan soa/an 2 ialah 45 min t dan Soa/an 3ia/ah 45 minit.

9. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram.

10. Kertas soa/an ini hendaklah diserahkan di akhir peperiksaan.

Pemberian markah:

Markah Penerangan

3 Cemerlang : Respons yal}_g paling baik

2 Memuaskan : Respons yal}_g sederhana

1 Lemah: Respons yang kural}_g tejl_at

0 Tiada respons atau res_Q_ons salah

@ 2012 Hak Cipta MPSM Pahang [ Lihat halaman sebelah





3 454113


1. Answer all questions.

2. Write your answer for Question 1 and Question 2 in the spaces provided in the questionpaper.

3. Write your answers for Question 3 on the extra sheet. You may use equations, diagrams,tables, graphs and other suitable methods to explain your answer.

4. Show your working, it may help you to get marks.

5. If you wish to cancel any answer, neatly cross out the answer.

6. The diagrams in the questions provided are not drawn to scale unless stated.

7. Marks allocated for each question or part question are shown in brackets.

8. The time suggested to answer Question 1and Question 2 is 45 minutes and Question 3 is45 minutes.

9. You may use a non-programmable scientific calculator.

10. This question paper must be handed in at the end of the examination.

Marks awarded:

Mark Description

3 Excellent: The best r e ~ o n s e provided

2 Satisfactory: An average response provided

1 Weak: An inaccurate response provided

0 No response or wrong response provided

@ 2012 Hak Cipta MPSM Pahang ( Llhat halaman sebelah





4 4541/3

1. Table 1 shows the observations in three test tubes used to investigate the effect of other

metals on rusting. A mixture of jelly solution, potassium hexacyanoferrate (Ill),

K3Fe(CN)e solution and phenolphthalein were used as medium in each test tube. Theobservations were recorded after one week.

Jadual 1 menunjukkan pemerhatian dalam tiga buah tabung uji yang digunakan untuk

menyiasat kesan logam lain ke atas pengaratan. Medium yang digunakan di dalam

setiap tabung uji adalah campuran larutan agar-agar. Larutan kalium

heksasianoferat(/11), K3Fe(CN)s dan fenolftalein. Pemerhatian direkod selepas satu

minggu.

Test

tubeTabung

uji

Set-up of apparatus

Susunan radas

Jelly solution +potassiumhexacyanoferrate (Ill),K3Fe(CN)s solution +

Iron nail phenolphthaleinPaku besi

Copper strip Larutan agar-agar,Kepingan __ ........,:1\'l'>o_ larutan kalium

kuprum heksasianoferat (Ill),K3Fe(CN)6 danfeno/ftalein

Jelly solution +potassiumhexacyanoferrate (Ill),K3Fe(CN)s solution +phenolphthalein

Larutan agar-agar,

larutan kaliumheksasianoferat (Ill),

K3Fe(CN)6 danfenolftalein

Observation

Pemerhatian


UntukKegunaanPemeriksa





Ill

\

5

Jelly solution +...-:-::-:- potassium

: = : ~ r - hexacyanoferrate (Ill),: : _ : ~ = ~ K3Fe(CN)B solution +

Iron nail ---....1;-ioii::l[:-:: phenolphthalein

Paku besi ~ -

- -::0

Larutan agar-agar,

larutan kaliumheksasianoferat (Ill),

K3Fe(CN)6 dan

fenolftalein

Table 1

Jadua/1

4541/3

Unluk

Kegunaan

Pemeriksa

a) Complete the observations in the Table 1 above.Lengkapkan pemerhatian dalam Jadual 1 di atas.

[3marks] em3{ 3 markah]

b) State one inference for each test tubes I, II and Ill.Nyatakan satu inferens untuk setiap tabung uji /, II dan Ill.

Test tube 1:

Tabung uji 1

··· ···· ··· · ···· ······ ·· ········· · ········ · ·· · ··· ···· ·· ··········· ·· ·· ···· ··· ·· ·· · ··· ······ ··· ············ ········

Test tube II:Tabung uji II:

····· ·········· ·· · ··· ·· ···· ·········· ··· ···················· ·· ······ ······· ·························· ··· · ·· ····

···· ··· ····· ···· ·· ·· ··· ·········· ··· ···· ·· ·· ··· ······ ····· ·· ··· ······ · ·· ··· ··· ····· · ··· ···· ···· · ·················

§t_tube Ill :

· ·_. I Q ~ uji Ill:,..,_. : , . " " ~ v ·

. ...... . { ... .. .... ... ... .. ..... ......... • •• 0 •• 0 •• • •• 0 •• • • •••• •• • • •••• •• ••••••••••• • • • • • • • ••••• • ••• • •• •• •

c.O ,-; ·


[ 3 marks] I:=J{ 3 markah] l___l2j






6 4541/3

c) State the hypothesis for the experiment.Nyatakan hipotesis bagi eksperimen tersebut.

···· ···· ·· ···· ············· ··········· ····· ········ ··· ·· · ·· ······ ··· ·· ·· ······ ······· ···· ···· ·· ······ ········ ··

······· ·· ···· ··· ·· ····· ······ ····· ·· ·· ···· ··· ·· ··· ··· ·· ·· ······ ···· ········ ·· ······ ········ ··· ·· ···· ·· ·· ·· ·· ···

..... ..... ....... . ... .. ...... ......... . .. ...... ... ... ... .. .... .... ..... ..... ......... .. .. ..... ........... ......

... .. .... ..... .... .. .... ... ... ... ..... .. ...... ....... . .. .. .... ......... ... ..... .. ........ ......... ... .. ... ......

d) For this experiment, stateBagi eksperimen ini, nyatakan

(i) The manipulated variable:Pembolehubah dimanipu/asi:

[ 3 marks][ 3 markah]

... .. ... ..... .. ...... ... ... ...... .... ..... ... ....... ...... .. ...... ... ... ....... ....... ......... .... .... .. ...

.... ..... ................... .... ...... ... .. ..... ... ..... ..... .. ............ ............ .. .. ... ..... ... ......

(ii) The responding variable :Pembolehubah bergerak balas:

·· ·· ····· ····· ········ ······· ···· ······· ········· ···· ···· ···· ···· ··· ····· ···· ·· ··· ·· ········ ···· ···· ······· ·

(iii) The constant variable:Pembolehubah dima/arkan:


[ 3 marks 1 r--=J[ 3 markah] Ll2J






7

e) State the operational definition for the rusting of iron nail.

Nyatakan definisi secara operasi bagi pengaratan paku besi.

f) Diagram 1 shows the apparatus set-up of an experiment.

Rajah 1 menunjukkan susunan radas bagi satu eksperimen.

Jelly solution !Larutan agar-agar

+

Potassium hexacyanoferrate (Ill), K3Fe(CN) 6Larutan kalium heksasianoferat (Ill), K3Fe(CN)s

+

Phenolphthalein lfenolftalein

Iron nail coiled with lead strip

Paku besi dililit dengan kepingan plumbum

Diagram 1Rajah 1

Predict an observation for the experiment after a week.Ramalkan pemerhatian daripada eksperimen itu selepas satu minggu.

4541/3

[ 3 marks 1{ 3 markah]

[ 3 marks 1[ 3 markah]



[EjTotal1~





8 4541/3

2. Diagram 2 shows the set-up of apparatus to determine the heat of combustion foralcohols.

Rajah 2 menunjukkan susunan radas untuk menentukan haba pembakaran alkohol.

Thermometer

Termometer

Wind shield

Penghadang angin

Spirit lamp

Lampu pelita

Alcohols

Alkohol

Diagram 2Rajah 2

Copper can

Tin kuprum

Waterair

Tripod stand

Tungku kaki tiga

Wooden block

Blok kayu

Three sets of experiments are carried out to determine the heat of combustion of

different types of alcohols.






Set

II

111

9

Initial thermometer readingBacaan awal termometer

50

40

30

10

10

Diagram 2.1Rajah 2.1


4541/3

Highest thermometer readingBacaan tertinggi termometer

60

so

40

30

20

60

50

40

30

20






10 4541/3

(a) Record the initial thermometer readings and highest thermometer readings in Set I,

Set II and Set Ill at space provided in Diagram 2.1

Rekodkan bacaan awal termometer dan bacaan tertinggi termometer dalam Set /,Set II dan Set J/1 pada ruang yang disediakan pada Rajah 2.1

[ 3 marks]

[ 3 markah]

(b) Construct a table to record the initial temperature of water, highest temperature of

water and increase in temperature in Set I, Set II and Set Ill.

Bina satu jadual untuk merekodkan suhu awal air, suhu tertinggi dan kenaikan suhudalam Set/, Set II dan Set Ill.

( 3 marks]

[ 3 markah]







11 4541/3

Table 2 shows the heat of combustion of four alcohols.

Jadual 2 menunjukkan haba pembakaran bagi em pat enis alkohol.

Alcohol

Alkohol

Methanol

Metanol

Ethanol

Etanol

Propanol

Propanol

Butanol

Butanol

Molecular formula

Formula molekul

CH30H

C2HsOH

C3H10H

C4H90H

Table 2

Jadua/2

Heat of combustion (KJmor 1)

Haba pembakaran (KJmof 1)

-728

- 1376

-2016

-2678

(c) Sketch a graph to show heat of combustion of alcohols in Table 2 against number of

carbon atoms per molecule.

Lakar graf untuk menunjukkan haba pembakaran bagi alkohol dalam Jadual 2

. me/awan atom karbon per molekul.

Untuk

Kegunaan

Pemeriksa

[ 3 marks ] r--=J{ 3 markah] lJ2J






12

Diagram 2.2 shows the energy level for combustion of ethanol.

Rajah 2.2 menunjukkan aras tenaga untuk pembakaran eta no/.

Energy

Tenaga

.6. H =-726 KJmol·1

Diagram 2.2Rajah 2.2

(d) State three informations from Diagram 2.2 .

Nyatakan tiga maklumat berdasarkan Rajah 2. 2

4541/3

1. ····· · ····· · ··· ··· ······ ····· ···· .......................... ... ...... . .. . .... .... ... ...... ... . ..... . ... ..... . ......... .. ... ..

2 ..... .: ... . ..................... .. . ....... ....... .. .. ........ ............ .... ......... ... ............ .. ............ .... .. ..

3 ...... ...... .......................... . ..... ... . ... .................. .. . .................. ............ . .. .. . ... .. ... ....... .


[ 3 marks ] \.=J{ 3 markah] L.l.:J






13 4541/3

(e) Alcohol is one example of carbon compounds .

Classify the following carbon compounds into hydrocarbons and non-hydrocarbons.

Alkoho/ ada/ah satu contoh sebatian karbon .

Kelaskan sebatian karbon berikut kepada hidrokarbon dan bukan hidrokarbon.

Ethene , C2H4

Etena , C2H4

Methanoic acid, HCOOH

Asid Metanoik, HCOOH


propanol, C3H10H

propanol, C3H70H

Prophyl ethanoate,CH3COOC 3H7

propil etanoat, CH3COOC3H1

[ 3marks]{3 markah]

[ Llhat halaman sebelah

UntukKegunaanPam eriksa

Tota12





14 4541/3

3.

Snail body covered by a cone-shaped shell. What is the chemical compound found in the shells

so hard and waterproof? Actually, the above mentioned shell consists of calcium carbonate,

CaC03 which is insoluble salt.

Badan siput dilindungi oleh cengkerang yang berbentuk kon. Apakah sebatian kimia yang

terdapat pada cengkerang itu supaya keras dan kalis air? Sebenarnya, cengkerang terdiri

daripada ka/sium karbonat, CaC03 iaitu garam yang tidak larut.

Referring to the situation above, plan a labarotary experiment to compare the solubility of nitrate

salt, sulphate salt, carbonate salt and chloride salt in water.

Berdasarkan situasi di atas, rancang satu eksperimen untuk membandingkan keterfarutan

garam nitrat, garam sulfat, garam karbonat dan garam k/orida dalam air.

Your planning should include the following aspect:

Perancangan anda hendaklah mengandungi aspek-aspek berikut:

a) Problem statement

Pernyataan masalah

b) All the variablesSemua pembolehubah

c) HypothesisHipotesis

d) List of materials and apparatusSenarai bahan dan radas


END OF QUESTION PAPER

KERTAS SOALAN TAMAT

[ 17 marks]

{17 markah]






` SULIT 4541/1/PP 4541/1/PP PERATURAN PERMARKAHAN CHEMISTRY Kertas 1 OKT/NOV 2012

MAJLIS PENGETUA SEKOLAH MALAYSIA NEGERI PAHANG

PERATURAN PERMARKAHAN PEPERIKSAAN PERCUBAAN TAHUN 2012

CHEMISTRY Tingkatan 5

SKEMA KERTAS 1

MAKLUMAT UNTUK PEMERIKSA KERTAS

1. Kertas skema ini mengandungi 50 jawapan untuk soalan objektif. 2. Kertas skema ini adalah sulit sehinggalah tamat peperiksaan percubaan SPM 2012. 3. Terima kasih.

Kertas skema ini mengandungi 2 halaman bercetak

© 2012 Hak Cipta MPSM Pahang [Lihat halaman sebelah SULIT





` SULIT 4541/1

Marking sheme Chemistry Paper 1 Form 5

( TRIAL EXAM 2012 @ MPSM Pahang)


SULIT

No.

SoalanAnswer

No.

SoalanAnswer

No.

SoalanAnswer

No.

SoalanAnswer

1 A 14 C 27 C 40 B

2 C 15 C 28 B 41 B

3 D 16 C 29 B 42 A

4 D 17 D 30 D 43 A

5 C 18 C 31 C 44 C

6 C 19 C 32 B 45 C

7 C 20 C 33 C 46 D

8 A 21 B 34 A 47 C

9 D 22 B 35 B 48 D

10 D 23 B 36 A 49 C

11 B 24 D 37 B 50 C

12 D 25 A 38 A

13 A

26C

39 A





SULIT 1 4541/2/PP

@ 2012 Hak Cipta MPSM Pahang [Lihat halaman sebelahSULIT

4541/2/PPPeraturan PermarkahanChemistryKertas 2

Okt/Nov 2012

MPSM PAHANG


TINGKATAN 5

CHEMISTRY

Kertas 2

PERATURAN PEMARKAHAN

_____________________________________________________________________

Kertas skema ini mengandungi 10 halaman bercetak

Amaran

Peraturan pemarkahan ini adalah SULIT.





SULIT 2 4541/2/PP


MARKING SCHEME / SKEMA PERMARKAHAN

CHEMISTRY PAPER 2

TRIAL SPM MPSM PAHANG 2012

NO Answers Marks

1.a)

b)(i)

(ii)

c)

d)(i)

(ii)

e)(i)

C3H6

CnH2n+1 OH

C3H7OH C3H6 + H20

H H H H H H

H- C –C- C - H

H – C – C – C -O H

H H H H OH H

Propan-1-ol Propan-2-ol

(any one)

Propane

C3H6 + H2 C3H8

-Formula reactant correct

-Formula product correct

Propyl ethanoate

1

1

1

1+1

1

1

1

1

9

2.a)

(i)

(ii)

Number of proton in nucleus of its atom

15

1

1

b) Nucleon number 1

c)(i) Q and R have different number of neutron/nucleon number 1

(ii) Carbon 14 - to estimate the age of fossils and artifactsCobalt 60 - kill cancer cells,sterilised medical instruments

Sodium 24-detect leakage of underground pipes

(any one)

1

d (i)

(ii)

iii)

2.8.7

7

Draw diagram:

1

1

R





SULIT 3 4541/2/PP


Figure of electron arrangement of R

3 shells

1

1

9

3.a)

( i)

(ii)

(iii)

b)

c)

d)

e)

f)

g)

Z

Q

Y

Q, P, Z, Y, T

4

Z has higher number of protons than T. Hence it has stronger

nuclei attraction on the electrons.

Y3+

Transition Elements

Their ions or compounds are colored//They form complex

ions or compounds/they are good catalysts//They can have

variable oxidation.

1

1

1

1

1

1 + 1

1

1

1

10

4.a)

b.(i)

(ii)

(c)

d)(i)

(ii)

e)

H+ , Cu 2+ ,

SO42- , OH -

Bubbles of gas released

Concentration of Cu2+ decrease // Cu 2+

discharge to form Cu atom

Cu2+ + 2e Cu

Anode become thinner / smaller / mass

decrease

Cathode become thicker / bigger / mass

increase

Correct diagram

Copper electrode at anode

Steel spoon at cathode

Copper (II) sulphate as electrolyte

Correct label

1

1

1

1

1

1

1

1

1





SULIT 4 4541/2/PP


f) Hydroxide ion 1

10

5.a)

b)

c) d) e)

f)

g)

Pink to colourless

The point in the titration at which the indicator changes

colour

H2SO4 + 2NaOH Na2SO4 + 2H2O

Sodium sulphate and water

M1V1 = 1M2V2 2

0.25 × V1 = 10.5 × 25 2

V1 = 1 × 0.5 × 252 × 0.25

= 25cm3

50 cm3

i) Vinegar is used to cure wasp sting that alkaline in nature

ii) Toothpaste contain bases to neutralize acid produce by

bacteria

1

1

1+1

1

1

1

1

1

1 + 1

11

6.

a)

b)

c)

d)

Redox reaction is a reaction in which oxidation and reduction

occur at the same time

Oxygen and water

Fe → Fe2+ + 2e

Label of water droplet, oxygen and iron

Label of anode and cathode

Draw arrow from negative to positive pole iron

1

1

1

1

1

1





SULIT 5 4541/2/PP


e)

f)

Electron transfer form anode to cathode

Oxygen in water gains electrons

Hydroxide ion is form

Using sacrificial metal // sacrificial protection /

By alloying /

By tin platting /

By galvanizing

(Any two)

1

1

1

1+1

117

a)

Correct axis with unit

Correct and Smooth line

Correct scale

1

1

1

0

1

2

3

4

5

6

1 2 3 4 5 6 7

h e i g h

t o f p r e c i p i t a t e / c m





SULIT 6 4541/2/PP


b.

(i)

(ii)

c)

d.(i)

(ii)

iii)

Pb(NO3)2 + 2KI PbI2 + 2KNO3

Volume of Pb(NO3)2 = 2.5 cm3

No of mole Plumbum (II) ion = 1 x 0.0025 = 0.0025 mol

No of mole iodide ions = 2 x 0.0025 = 0.005 mol

Pb2+ +2 I- PbI2

Correct reactants and products

Balance equation

Salt X = Copper (II) carbonate

Gas Z = Carbon dioxide

Y precipitate = Barium sulphate

CuSO4 + Ba(NO3)2 Cu(NO3)2 + BaSO4

Correct reactants and products

Balance equation

1. Add sodium hydroxide solution.

2. Blue precipitate formed indicates the presence of Cu+ ion.

3. Add hydrochloric acid.

4. Add barium chloride solution.

5. White precipitate formed indicate the presence of SO42-

ion.

1 + 1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

20

8.a) 1. the mixture becomes hot

2. the thermometer reading increase

3. zinc powder dissolves

4. brown solid/precipitate formed

5. the blue solution turn colourless(Any three)

1+1+1





SULIT 7 4541/2/PP


(b)(i)

(ii)

(iii)

(iv)

c) (i)

Cu 2+ + Zn Cu + Zn2+

-Correct formula & reactants

-correct balance

Heat released in the reaction

-50x4.2x5// 1050 J

-number of mol of Cu atom

50x0.1//0.005 mol

1000

-show the step to obtain heat of displacement

1050 J

0.005 mol

- heat of displacement with unit and negative symbol

-210000 Jmol-1//-210 kJmol-1

-heat loss to the surrounding

2 precautions

1. use polysterene cup//use two layers of polysterene cup

Instead of one.

2. add zink powder quickly into the solution

3. stir the mixture continuously until highest temperature

obtained.

(Any two)

- temperature change will be doubled//100C

- number of copper(II) ions per unit is doubled/ two times

higher

Label Energy, correct level of reactants & product

- correct chemical equations

- H with negative symbol and unit

Zn + Cu2+

H= - 210 kJ mol-1

Energy

Zn2+ + Cu

1

1

1

1

1

1

1

1+1

1

1

1

1

1





SULIT 8 4541/2/PP


(ii) Exothermic reaction//heat released to the surrounding

Energy content of reactants is higher than energy

content of products

Heat absorbed to break down the bond is lower than

heat released to form a bond

1

1

1

20

9

a.(i)

(ii)

b.

c.

1. Tomato puree is used as a colouring agent to restore the

colour of the food.

2. Sugar // spice is used as a flavouring agent to enhance

the taste of food

3. Permitted modified starch is used as thickener to thicken

food.

(Any two)

Advantage :

i) to prevent food from spoilage

ii) to improve appearance, texture or taste

Disadvantage:

i) Lead to serious diseases like asthma, and cancer

- Part A is hydrophobic: Soluble in oil or grease

- Part B is hydrophilic: Insoluble in oil or grease//soluble in

water

1. Hard water contain Mg2+ and Ca2+ ion

2. Detergent does not form scum in hard water

3. Soap form scum in hard water

4. Mg2+ and Ca2+ in hard water react with soap

5. Soap molecule consist of hydrophobic and hydrophilicpart

6. Hydrophobic part dissolve in oil

7. Hydrophilic part dissolve in water

8. During scrubbing/rinsing the oily stains/spots is

2+2

1

1

1 + 11 + 1

1

1

1

1

1

1

1

1





SULIT 9 4541/2/PP


washed away

9. Cloth in experiment II /detergent is cleaner than clothin experiment I

10. Detergent in hard water is more effective than soap.

1

1

20

10.

a.(i)

(ii)

b)

c)

The speed at which reactant are converted into product in a

chemical reaction// change in selected quantity of reactant or

produrt per unit of time taken.

Total surface area / concentration of reactant / temperature

of reactant / use of catalyst / pressure of gaseous reactant

(any 4)

To make the coffee powder and sugar dissolve easier inwater.

The heat given to the water will give more kinetic energy tothe particles.

The particles of water, coffee powder and sugar move faster.

They will collide each other more frequent.

The frequency of effective collision will increase.

Precipitate : Sulphur

Materials:0.2 mol dm-3 sodium thiosulphate, 1.0 mol dm-3 sulphuricacid, a piece of white paper marked ‘X’ at the centre.

Apparatus:150 cm3 conical flask, stopwatch, 50 cm3 measuring cylinder,10 cm3 measuring cylinder, thermometer, Bunsen burner,wire gauze.

Procedure:Using a measuring cylinder, 50 cm3 of 0.2 mol dm-3 sodiumthiosulphate solution is measured and poured into a conicalflask.

The conical flask is placed on top of a piece of white paper marked ‘X’ at the centre.

1

1+1

1

1

1

1

1

1

1

1

1

1





SULIT 10 4541/2/PP


END OF MARKING SCHEME

5 cm3 of 1.0 mol dm-3 sulphuric acid is measured usinganother measuring cylinder.

The sulphuric acid is poured immediately and carefully into

the conical flask. At the same time, the stop watch is atarted

The mixture in a conical flask is swirled.

The ‘X’ mark is observed vertically from the top of the conicalflask through the solution.

The stopwatch is stopped once the ‘X’ mark disappears fromview.

Step 1 – 7 are repeated using 50 cm3 of 0.2 mol dm-3 sodiumthiosulphate solution at 40oC, 50oC, 60 oC by heating the

solution before 5 cm3 of sulphuric acid is added in.(Max 8)

ConclusionThe increase of temperature, increase the rate of reaction

1

1

1

1

1

1

1

20





SULIT 4541/3/PP

@ 2012 Hak Cipta MPSM Pahang 1 [ Lihat halaman sebelahSULIT

4541/3/PPPeraturan PermarkahanKimia

Kertas 3OKT/NOV 2012

MPSM PAHANG

MARKING SCHEME

PEPERIKSAAN PERCUBAAN SPM 2012

TINGKATAN 5

CHEMISTRY

Paper 3

Kertas skema permarkahan ini mengandungi 14 muka surat bercetak.

Amaran

Peraturan pemarkahan in i adalah SULIT.





SULIT 4541/3/PP


Question Mark scheme score

1(a) Able to state three observations.

Sample answer

Test tube I – Intensity of blue colour produce is very high //

- Does not produce pink colour.

Test tube II – Intensity of pink colour produce is very high //

- Does not produce blue colour.

Test tube III – intensity of blue colour produce is very high //

- Does not produce pink colour.

3

Able to state any two correct observations. 2

Able to state any one correct observation 1

No response or wrong response 0

1(b) Able to state one inference for each experiment

Sample answer:

Test tube I : iron rust/oxidised // iron atom released electron//

iron(II) ions/ Fe2+ formed// iron(II) ions

present// rusting occur

Test tube II : iron does not rust// iron(II) ions are not present

// zinc corrode // zinc atom release

electron// zinc ions formed // zinc oxidised

Test tube III : iron rust/oxidised // iron atom released electron

// iron(II) ions/ Fe2+ formed // iron(II) ions

present // rusting occur

3

Able to state any two inferences 2

Able to state any one inference 1


1(C Able to state the hypothesis accurately

Sample answer:

When a more/ less electropositive metal is in contact with

iron/ferum/Fe, the metal inhibits/ (speeds up) rusting/ corrosion

of iron //

3





SULIT 4541/3/PP


When a more/ less electropositive metal is in contact with

iron/ferum/Fe, rusting of iron/ferum/Fe is slower/faster

If the metal in contact with iron is higher/lower than

iron/ferum/Fe in electrochemical series, the rusting/corrosion of

iron is slower/faster//

The higher/lower the metal in contact with iron in

electrochemical series/than iron/ferum/Fe, the rusting/corrosion

of iron/ferum/Fe is slower/faster

Able to state the hypothesis correctly

Sample answer:

When a more/less electropositive metal, the metal inhibits/

(speeds up) rusting/corrosion of iron//

If the metal in contact with iron is higher than iron/ferum/Fe in

reactivity series, the rusting/corrosion of iron is slower/faster//

The rusting of iron/ferum/Fe is faster/slower, if a less / more

electropositive metal is in contact with iron/ferum/Fe

2

Able to state the idea of hypothesis

Sample answer

Different metal in contact with iron, will cause iron to rust//

Metal can cause iron to rust.

1


1 (d) Able to state the three variables correctly

Sample answer:

(i) Manipulated variable:

Type/different metals// position of metal in

electrochemical series

(ii) Responding variable:

3





SULIT 4541/3/PP


Rusting/ corrosion// presence of blue/pink colour

(iii) Constant variable:

Size/mass of iron nail// type of nail// clean iron nails//

temperature// medium in which the iron nails are kept

Able to state any two variables correctly 2

Able to state any one variable correctly 1


1(e) Able to give the operational definition accurately.

Sample answer:

When iron is in contact with metal lower than iron in

electrochemical series, blue colouration indicates rusting//

Rusting occurs when iron nail is in contact with copper/tin/less

electropositive metal and form blue colouration//

Blue colouration is formed when iron is in contact with metal

lower than iron in electrochemical series.

3

Able to give the operational definition correctly.

Sample answer:

Blue colouration indicates rusting//

Rusting occurs when iron nail is contact with copper/tin/less

electropositive metal

2

Able to give an idea of the operational definition.

Sample answer:

Rusting occurs when the colour of solution changes.//

Rusting occurs.

1






SULIT 4541/3/PP


1(f) Able to predict any one the observations based on the

laboratory experiment correctly

Sample answer:

Intensity of blue colour higher //

Iron nail becomes smaller//

Lead strip remains unchanged

3

Able to predict one observation less correctly

Sample answer:

Pink spot/colouration

2

Able to give an idea of observation

Sample answer:

Iron rusts // brown deposit/spot

1


Question Details Score

2.a) Able to record all readings accurately to one decimal point with

unit.

Sample answer:

Set Initial thermometer

reading,°C

Highest thermometer

reading,°C

I 27.0 53.0

II 29.0 57.0

III 27.0 59.0

3

Able to record all readings correctly.

#readings to one decimal point without unit.

#readings without decimal point with / without unit.

Sample answer:


reading

Highest thermometer

reading

I 27.0 53.0

II 29.0 57.0

III 27.0 59.0

2





SULIT 4541/3/PP


OR


reading

Highest thermometer

reading, °C

I 27 53

II 29 57

III 27 59

Able to record three or five readings correctly 1


Question Details Score

2.b) Able to construct a table to record the initial temperature of

water, highest temperature of water and increase in temperature

for Set I, Set II and Set III

1.correct titles

2. readings and units

Sample answer:

Set I II III

Initial temperature, ⁰C 27.0 29.0 27.0

Highest temperature, oC 53.0 57.0 59.0

Increase in temperature, oC 21.0 29.0 32.00

3

Able to construct a less accurate table that contains the

following:

1. Titles

2. Readings

Sample answer:





SULIT 4541/3/PP


I II III

Initial temperature 27⁰C 29 27⁰C

Highest temperature 53.0 57.0 59.0

Increase in temperature 26⁰C 28 32⁰C

2

Able to construct a table with at least one title/ reading.

Sample answer :

I II III

Increase in temperature

1


2.c) Able to sketch the graph of heat of combustion of alcohols

against number of carbon atoms per molecule.

The graph must have the following information:

1. The axes are labeled correctly

2. Correct unit

3. Correct curve

Sample answer:

3





SULIT 4541/3/PP


Able to sketch the graph of heat of combustion against number

of carbon atoms

i. without units on y-axis

ii. correct curve

sample answer:2

Able to sketch the graph with only one correct information.

Sample answer:

1

Heat of combustion, KJmol‐1

1 2 3 4

Number of C atom per molecule

Heat of combustion

1 2 3 4Number of carbon atom





SULIT 4541/3/PP


Or


2.d) Able to state three correct information from the diagram.

Sample answer:

1. The reaction is an exothermic reaction // heat energy is

released to the surrounding.

2. 726 KJ of heat is released when one mole of methanol is

burnt.

3. Total energy of reactant is higher than the products.

3

Able to state any two correct information. 2

Able to state any one correct information. 1

No response or wrong response. 0

2.e) Able to classify all carbon compounds correctly.

Sample answer:

Hydrocarbon Non-hydrocarbon

Ethene, C2H4 Propanol, C3H7OH

Methanoic acid, HCOOH

Prophyl ethanoate,

CH3COOC3H7

3

Heat of combustion KJmol‐1

Number of C atom





SULIT 4541/3/PP


Able to classify at least three carbon compounds correctly. 2

Able to classify any one carbon compound correctly. 1

No response or wrong response. 0

Question

Number

Rubric Score

3(a) Ab le to g ive the statement of prob lem correctly.

Sample answer:

Does all nitrate, sulphate, carbonate and chloride salts aresoluble in water?

3

Ab le to g ive the statement of prob lem correctly.

Sample answer:

Does all salts are soluble in water?

2

Ab le to g ive the statement of prob lem correctly.

Sample answer:

Salt are soluble and insoluble in water

1






SULIT 4541/3/PP


3(b) Ab le to s tate all variables correct ly

Sample answer:

Manipulated variable: Type of salt

Responding variable: Solubility of salt

Constant variable: volume of water/ mass of

salt/temperature

3

Able to state any two variables above correctly 2

Able to state any one variables above correctly 1


3© Ab le to g ive hypothesis accurately .

Sample answer:

Some of salts soluble in water but other salts insoluble in water// all nitrate salts are soluble in the water but the other saltsinsoluble in water.

3

Ab le to g ive the statement of hypothesis co rrect ly .

Sample answer:

All nitrate salt are soluble in water

2

Ab le to g ive idea of hypothesis.

Sample answer:

Different salts produce different solubility in water

1






SULIT 4541/3/PP


3(d) Ab le to list completely the materials and apparatus

Sample answer:

Material:

1. Any suitable nitrate, sulphate, carbonate and chloride

salts soluble and insoluble in water

2. Distilled water

Apparatus:

1. Test tube

2. Spatula

3

Ab le to list incompletely materials and apparatus.

Sample answer:

Materials:

1. Incomplete salt :

List only 3 type of salt Eg zinc nitrate, lead (II) sulphate,

calcium carbonate

2. Distilled water

Apparatus:

1. Test tube

2. Spatula

2

Ab le to g ive an idea of materials and apparatus .

Sample answer:

Materials:

1. Incomplete salt :

List only 2 type of salt Eg zinc nitrate, plumbum (II)

sulphate, calcium carbonate

1





SULIT 4541/3/PP


2. No dist illed water

Apparatus:

1. Test tube

2. Spatula


3 (e) Ab le to s tate all procedures completely and correctly

Sample answer:

1. Half a spatula of (nitrate salt) powder is added in a test

tube

2. Pour 5 cm3of distilled water into the test tube

3. Shake the test tube.

4. Observe the solubility of salt and record in the table.

5. Experiment is repeated using various salt powder.

3

Ab le to s tate procedures incompletely .

Sample answer:


tube


3. Observe the solubility of salt and record in the table.

2

Ab le to g ive an idea of the procedure.

Sample answer:


tube

1





SULIT 4541/3/PP



3(f) Ab le to exhibi t the tabulation of data correct ly .

Sample answer:

Salt Solubility of salt in water

Zinc nitrate

Magnesium chloride

Sodium chloride

Lead (II) sulphate

Copper (II) sulpahte

Potassium carbonate

2

Ab le to exhibi t the tabulat ion o f data less accurately.

Sample answer:

Salt Solubility of salt in water

1



chemistry pahang 2012

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