paper 2 exam final f4

7/26/2019 Paper 2 Exam Final f4

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SMK LOHANPEPERIKSAAN AKHIR TAHUN TINGKATAN 4 2014

CHEMISTRY

Paper 2

Time :

Class : Marks :

This question paper consists of threesections: Sectio A! Sectio " andSectio C.

Kertas soalan ini mengandungi ti#abahagian: "aha#ia A! "aha#ia "dan "aha#ia C.

Sectio A

Bahagian A

[60 marks

[60 markah

!ns"er a$$ questions in this section.

Jawab %e&'asoalan dalam bahagian ini.

#. Dia$ram %elo" sho"s the chemical formulae of t"o o&ides.

Rajah di bawah menunjukkan formula kimia bagi dua oksida.

Dia$ram'Rajah

(a) *tate the names of these t"o metal o&ides.

Nyatakan nama dua oksida logam ini.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[, marks', markah

(%) *tate the properties of these t"o metal o&ides.

Nyatakan sifat dua oksida logam ini.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[, marks', markah

(c) (i) -rite the formulae of all the ions in Na,.

Tuliskan semua formula ion dalamNa,.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[, marks', markah

(ii) /&plain ho" each of these ions is formed.

Jelaskan bagaimana setiap ion ini terbentuk.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[, marks', markah(iii)*tate oe chemical propert of Na,.

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Nyatakan %at'sifat kimiaNa,.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[, marks', markah

(d) *tate oe special propert of !l,1.

Nyatakan %at'sifat istimewa !l,1.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[, marks', markah

,. The sm%ols of the elements and the proton num%ers are listed %elo". 2se these sm%ols to ans"er the

questions.

Simbol bagi unsur-unsur dan nombor proton disenaraikan di bawah. unakan simbol ini untuk menjawab

soalan.

Na&e

Nama

S(&)o$

Simbol

Proto '&)er

Nombor proton

!luminium!luminium

!l #1

3hosphorus

"osforus3 #4

Chlorine

KlorinCl #5

!r$on

!rgon!r #

3otassium

Kalium7 #8

9anadium

#anadium9 ,1

ron

"erum;e ,6

Copper

KuprumCu ,8

Ta%le'Jadual

(a) *tate an element that is produced % the reduction of its o&ide "ith coke.

Nyatakan unsur yang dihasilkan oleh penurunan oksidanya dengan kok.

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

[# mark'markah

(%) i=e the sm%ol of a nonmetal that is used to sterilise "ater.

%erikan simbol bukan logam yang digunakan untuk mensterilkan air.

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

[# mark'markah(c) Name an element that reacts "ith "ater to $i=e an alkaline solution. -rite an equation for this reaction.

Namakan unsur yang bertindak balas dengan air untuk menghasilkan larutan beralkali. Tuliskan

,


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persamaan untuk tindak balas ini.

Name:

Nama: ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/quation:

&ersamaan: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

[, mark'smarkah

(d) This element is one of the plant nutrients. -rite do"n its sm%ol and its electronic confi$uration.

'nsur ini merupakan suatu nutrien tumbuhan. Tuliskan simbol dan konfigurasi elektroniknya.

*m%ol:

Simbol: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

(le)troni)s )onfiguration:

Konfigurasi elektronik: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

[, marks'markah

(e) The o&ide of this element is used as a catalst in the Contact 3rocess.

*ksida unsur ini digunakan sebagai pemangkin dalam &roses Sentuh.

i. Name the o&ide of the element.

Namakan oksida bagi unsur ini.

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

[# mark'markah

1. (a) (i) The electron arran$ement of the sodium is ,..#. -h is this element =er reacti=e?

Konfigurasi elektron bagi natrium adalah ,..#.Kenapa unsur ini sangat reaktif?

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[, marks', markah

(ii) Name one other element in $roup # that is more reacti=e than sodium.

Namakan satu unsur lain dalam kumpulan #yang lebih reaktif dari natrium.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'# markah

(%) ! chlorine atom "ith an electron arran$ement of ,..5 is unsta%le. Dia$ram sho"s a chlorine molecule that

is formed %et"een t"o chlorine atoms.

!tom klorin dengan konfi gurasi elektron ,..5 adalah tidak stabil. Rajah di bawah menunjukkan molekul

klorin yang terbentuk antara dua atom klorin.

Dia$ram'Rajah

(i) Dra" a @e"is structure to sho" the formation of a chlorine molecule.

+ukiskan struktur +ewis yang menunjukkan pembentukan molekul klorin.

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[, marks', markah

(ii) Name the tpe of %ond in the chlorine molecule.

Namakan ikatan yang terbentuk di dalam molekul klorin

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[# mark'# markah

(c) (i) The electron arran$ement of element A is ,.., and the electron arran$ement of element B is ,.6. Name

the force that e&ists %et"een these t"o elements if the form a compound.

Konfigurasi elektron bagi A adalah ,.., dan konfigurasi elektron bagi B adalah ,.6.Namakan daya

yang terbentuk antara dua elemen ini apabila ia membentuk sebatian.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'# markah

(ii) -rite the possi%le ions of A and B.

Tuliskan ion yang mungkin bagi A dan B.

A: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

B: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[, marks', markah

(d) Dia$ram %elo" sho"s the formula of a compound that is formed %et"een t"o elements and B (the

letters used are not the actual sm%ols of the elements).

Rajah di bawah menunjukkan formula bagi sebatian yang terbentuk antara unsur dan B (abjad yang

digunakan tidak mewakili simbol sebenar unsur).

Dia$ram'Rajah

-hich $roups of elements do and B %elon$ to?

Kumpulan yang manakah diwakili oleh dan B?

: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

B: ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[, marks', markah

. (a) A $rams of sodium hdro&ideE NaFE are dissol=ed in distilled "ater to produce ,.0 mol dmG1standard

solution of NaF in #00 cm1. Dia$ram ! sho"s apparatus needed for the process.

Agram natrium hidroksidaE NaF dilarutkan dalam air suling untuk menghasilkan ,.0 mol dmG1 larutan

piawai

NaF dalam #00 cm1.Rajah! menunjukkan set alat radas yang diperlukan untuk proses tersebut.


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Dia$ram !'Rajah !

(i) *tate the meanin$ of a standard solution.

Nyatakan apakah yang dimaksudkan dengan larutan piawai.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'# markah

(ii) *tate a reason "h a =olumetric flask is more suita%le to %e used in the preparation of the standard

solution rather than a %eaker.Nyatakan mengapa kelalang isipadu lebih sesuai digunakan dalam penyediaan larutan piawai

berbanding bikar.

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

[# mark'# markah

(iii)Calculate A "hich is the num%er of $rams of NaF that are needed to prepare a standard solution of

0., mol dmG1NaF.

Kirakan AgramNaFyang diperlukan untuk menyediakan 0., mol dmG1larutan piawaiNaF.

[, marks', markah

(%) Dia$ram H sho"s the apparatus set up for the titration of sulphuric acid "ith potassium hdro&ide.

The results that are o%tained are $i=en in Ta%le %elo".

Rajah H menunjukkan set alat radas untuk pentitratan asid sulfurik dengan kalium hidroksida. Keputusan

yang diperolehi diberikan di dalam Jadual di bawah.

Dia$ram H'Rajah H

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Re%'$t%*Keputusan

Ta%le'Jadual

(i) *tate the meanin$ of the end point of a titration.

Nyatakan maksud titik akhir tindak balas peneutralan.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'# markah

(ii) *tate the chan$e in the colour of the methl oran$e at the end point.

Nyatakan perubahan warna metil oren pada titik akhir.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'# markah

(iii)-hat is the a=era$e =olume of sulphuric acid used?

%erapakah isi padu purata asid sulfurik yang digunakan,

[# mark'# markah

(i=)-rite an equation for the reaction %et"een potassium hdro&ide and sulphuric acid.

Tuliskan persamaan tindakbalas antara kalium hidroksida dan asid sulfurik.

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

[# mark'# markah

(=) Calculate the concentration of the sulphuric acid used if the concentration and =olume of the potassium

hdro&ide solution used are #.,4 mol dmG1and ,0 cm1respecti=el.

Kirakan kepekatan asid sulfurik yang digunakan jika kepekatan dan isi padu kalium hidroksida yang

digunakan masing-masing adalah#.,4 mol dmG1dan ,0 cm1.

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[, marks', markah

4. Dia$ram %elo" sho"s the structure of atom 3.

Rajah di bawah menunjukkan struktur bagi atom 3.

Dia$ram'Rajah

(a)NameI

NamakanI

(i) the particle J.

arahJ.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'markah

(ii) the particle * .

arah *.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'markah

(%)*tate the tpe of char$e on each tpe of particle present in atom 3.

Nyatakan jenis )as pada setiap arah yang hadir dalam atom 3.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'markah

(c)f the atomic mass of atom 3 is 5E ho" man particles of J are there in the nucleus?

Jika jisim atom 3 ialah 5E berapakah bilangan arah J di dalam nukleus?

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[# mark'markah

(d)(i) n "hich $roup of the periodic ta%le "ill ou place atom 3?

i dalam kumpulan yang manakah anda akan letakkan atom 3?

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'markah

(ii) n "hich period of the periodic ta%le "ill ou place atom 3?

i dalam kala yang manakah anda akan letakkan atom 3?

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'markah

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(e)-rite the electronic arran$ement of atom 3.

Tuliskan susunan elektron bagi atom 3.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'markah

(f) dentif atom 3.

Kenalpasti atom 3.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'markah

($)(i) 3redict the electrical conducti=it of element 3.

Teka kekonduksian elektrik bagi unsur atom 3.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'markah

(ii) /&plain our ans"er to (i).

Terangkan jawapan anda pada (i).

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'markah

6. Dia$ram %elo" sho"s the setup of an electroltic cell. Heaker contains a components of a simple chemical cell

"hereas electrolsis takes place in Heaker .

Rajah di bawah menunjukkan susunan radas bagi satu sel elektrokimia. %ikar / mengandungi komponen sel kimia

ringkas sementara proses elektrolisis berlaku di dalam %ikar //.

D!J!M'R!J!0

(a)*tate the chan$es in ener$ in Heaker and Heaker .

Nyatakan perubahan tenaga di dalam %ikar / dan %ikar //.

Heaker '%ikar /

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Heaker '%ikar //

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

$

[, marks', markah


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(%)-hich metal is the ne$ati=e terminal in Heaker ?

+ogam yang manakah ialah terminal negatif di dalam %ikar /,

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

$

[# mark'# markah

(c)(i) *tate the process occurred in the copper electrode in Heaker .

Nyatakan proses yang berlaku di dalam elektrod kuprum di dalam %ikar.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[# mark'# markah

(ii) -hat "ould ou o%ser=e at the sil=er electrode in Heaker ?

!pakah yang kamu dapat perhatikan pada elektrod argentum di dalam bikar /,

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

[# mark'# markah

(d)-rite equations for reactions "hich occurred at anode and cathode in Heaker .

Tuliskan persamaan bagi tindak balas yang berlaku di anod dan katod di dalam %ikar //.

!node'!nod:

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

$

[# mark'# markah

Cathode'Katod:

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

$

[# mark'# markah

(e)(i) -hat happens to the =oltmeter readin$ "hen the ma$nesium electrode in Heaker is replace "ith Kinc

electrode?

!pakah yang berlaku pada ba)aan 1oltmeter apabila elektrod magnesium di dalam bikar / digantikan

dengan elektrod ink,

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

$

[# mark'# markah

(ii)/&plain our reasons in (e) (i).

Terangkan alasan kamu di 2e3 2i3.

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

[, marks', markah

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Sectio "

Bahagian "

[,0 marks

[,0 markah

!ns"er an oe questions from this section.

Jawab mana-mana %at'soalan daripada bahagian ini.

5. The ta%le sho"s the proton num%ers and nucleon num%ers of three elements 7E @ and M.Jadual berikut menunjukkan nombor proton dan nombor nukleon bagi unsur-unsur 7E @ dan M.

Ta%le'Jadual

(a) /&plain ho" the position of element 7 in the 3eriodic Ta%le of /lement can %e determined.Terangkan bagaimana kedudukan unsur K dalam Jadual %erkala 'nsur dapat ditentukan.

[4 marks'markah

(%) The reacti=it of elements 7E @ and M increases from 7 to M. i=e a reason for this.

Ke)ergasan unsur-unsur 7E @ dan M berkurangan dari 7 ke M.%erikan sebabnya.

[4 marks'markah

(c) (i) Discuss ho" elements 7E @ and M should %e handled and stored in the la%orator.

Terangkan bagaimana mengendali dan menyimpan unsur-unsur K4 + dan 5 di dalam makmal.

[ marks'markah

(ii) Descri%e %riefl the reactions of element @ "ith "ater and "ith chlorine. Bour description should

include the o%ser=ationsE the names of the products and chemical equations for the reactions.Terangkan se)ara ringkas tindak balas antara unsur + dengan air dan klorin. Keterangan anda perlu

meliputi pemerhatian4 nama hasil tindak balas dan persamaan kimia bagi tindak balas yang berlaku.

[6 marks'markah

. (a) *tate "hat is meant % electrolsis.

Nyatakan apakah yang dimaksudkan dengan elektrolisis.

[, marks', markah

(%) Dia$ram sho"s t"o tpes of cell.

Rajah menunjukkan dua jenis sel.

#0


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Dia$ram'Rajah

(i) Descri%e three differences %et"een cell 3 and cell .

nclude the follo"in$ in our ans"er:

for the reactions at the electrodes in %oth cells.

Terangkan ti#aperbeaan antara sel 3 dan sel .

5asukkan perkara berikut dalam jawapan anda:

L the o%ser=ationE

pemerhatian

L half equation.

persamaan setengah bagi tindak balas pada elektrod-elektrod dalam kedua-dua sel.

[6 marks'6 markah

(ii) /&plain "h the reactions that occur in cell 3 and cell are redo& in terms of the loss of electrons.

Terangkan mengapa kedua-dua tindak balas yang berlaku dalam Sel 3 dan Sel adalah tindak balas

redoks dari segi kehilangan elektron.

[ marks' markah

(c) Desi$n an e&periment to electroplate an iron ke "ith copper

Bour ans"er should consist of the follo"in$:

Reka satu eksperimen untuk menyadur kun)i besi dengan kuprum

Jawapan kamu mestilah mengandungi perkara berikut:

L the chemicals requiredE

L bahan kimia yang diperlukan

L the procedure of the e&periment set upE

Lprosedur menjalankan eksperimen

L a dia$ram sho"in$ the of apparatus set up

L rajah menunjukkan susunan radas

L the chemical equation in=ol=ed in the reactionLpersamaan kimia yang terlibat dalam tindak balas ini

[ marks' markah

##


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Sectio C

Bahagian C

[,0 marks

[,0 markah

!ns"er an oe questions from this section.

Jawab mana-mana %at'soalan daripada bahagian ini.

8. (a) -hat is meant % empirical formula?

!pakah yang dimaksudkan dengan formula empirik,

[# mark'markah

(%) car%on compound contains 8,.1 of car%on and 5.5 of hdro$en % mass. The relati=e molecular mass

of this compound is 5.

;ind the molecular formula of this compound.

Satu sebatian karbon mengandungi 8,.1 karbon dan5.5 hidrogen per jisim. Jisim molekul relatif

untuk sebatian ini ialah5.

6ari formula molekul untuk sebatian ini.

[Jelati=e atomic mass: CE #, FE #[Jisim atom relatif: CE #, FE #

[4 marks'markah

(c) Descri%e ho" ou could determine the empirical formula of ma$nesium o&ide in the la%orator. Bour

description should include

Terangkan bagaimana anda dapat menentukan formula empirik bagi magnesium oksida di dalam makmal.

&enerangan anda perlu merangkumi

L the procedure of the e&periment

prosedur eksperimen

L ta%ulation of the results penjadualan keputusan

L the calculation of the results

pengiraan keputusan

[Jelati=e atomic mass: E #6 M$E ,

[Jisim atom ralatif: E #6 M$E ,

[# marks'markah

#0. (a) Dia$ram ! sho"s the states of chlorine and neon "hich e&ist at room temperature.

Rajah ! menunjukkan keadaan klorin dan neon yang wujud pada suhu bilik.

#,


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Dia$ram !'Rajah !

(i) i=e the electron confi$urations of chlorine and neonE then determine their positions in the periodic

ta%le.

%erikan susunan elektron bagi klorin dan neon4 kemudian tentukan lokasi kumpulan mereka dalam

Jadual %erkala 'nsur.

[ marks'markah

(ii) /&plain "h chlorine element e&ists in the form of diatomic molecules at room temperatureE %ut neon

e&ists as monatomic molecules.

0uraikan mengapakah unsur klorin wujud dalam bentuk molekul dwiatom di dalam suhu bilik4 tetapi

neon wujud dalam bentuk molekul monoatom. [6 marks'markah

(%) Dia$ram H sho"s that the chan$es in the chemical properties of the elements in t"o different $roups of the

periodic ta%le are different "hen $oin$ do"n the $roups.

Rajah H menunjukkan perubahan sifat kimia yang berbea bagi dua kumpulan yang berbea semasa

menuruni kumpulan.

Dia$ram H'Rajah H

/&plain.

Terangkan.

[#0 marks'markah

7/JT!* *!@!N T!M!T

#1

paper 2 exam final f4

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