modul kecemerlangan akademik spm 2014_kumpulan potensi_soalan.pdf
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JABATAN PELAJARAN MELAKA
____________________________________________________________
PROGRAM KECEMERLANGAN AKADEMIK
SIJIL PELAJARAN MALAYSIA 2014
CHEMISTRY
MODUL KUMPULAN POTENSI
Modul soalan ini mengandungi 35 halaman bercetak
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TOPICS THAT CONTAIN THE BASIC CONCEPTS THAT STUDENT SHOULD
MASTER IN CHEMISTRY.
TOPIK-TOPIK YANG MENGANDUNGI KONSEP ASAS KIMIA YANG PERLU
DIKUASAI OLEH PELAJAR
1. THE STRUCTURE OF THE ATOM.
STRUKTUR ATOM
2. CHEMICAL FORMULAE AND EQUATIONS.
FORMULA DAN PERSAMAAN KIMIA
3. THE PERIODIC TABLE OF ELEMENTS
JADUAL BERKALA UNSUR
4. CHEMICAL BOND
IKATAN KIMIA
MODULE 1
1 Which of the following substances consist of atoms?
Antara bahan-bahan berikut, yang manakah terdiri daripada atom?
A Iron / Besi C Water / Air
B Sodium chloride / Natrium klorida D Oxygen / Oksigen
2 Table 1 shows the melting and boiling points of substances P, Q, R and S.
Jadual 1 menunjukkan takat lebur dan takat didih bagi bahan P, Q, R dan S.
Substance
Bahan
Melting point / 0C
Takat lebur / 0C
Boiling point / 0C
Takat didih / 0C
P 25 5
Q 50 300
R 256 192
S 10 140
Table 1 / Jadual 1
Which of the following substances is a liquid at room temperature?
Antara bahan-bahan berikut, yang manakah merupakan cecair pada suhu bilik?
A P C R
B Q D S
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3
3 Diagram 1 shows the change of the state of matter.
Rajah 1 menunjukkan perubahan keadaan jirim.
Process P
Diagram 1 / Rajah 1
Which of the following is process P?
Antara berikut, yang manakah proses P?
A Freezing / Pembekuan C Boiling / Pendidihan
B Condensation / Kondensasi D Melting / Peleburan
4 When steam changes to water,
Apabila stim bertukar menjadi air,
A density decreases
ketumpatan berkurang
B energy is released
tenaga dibebaskan
C the size of the molecules decreases
saiz molekul berkurang
D the distance between the particles increases
jarak antara zarah-zarah bertambah
5 Which one of the following processes most clearly suggests that matter is made up of
particles in continuous motion?
Antara berikut, proses yang manakah menerangkan dengan jelas bahawa jirim terdiri
daripada zarah-zarah yang sentiasa bergerak?
A Combustion / Pembakaran C Diffusion / Resapan
B Melting / Peleburan D Neutralization / Peneutralan
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4
6 What can be deduced from the symbol 2713 Al?
Apakah yang boleh dideduksikan daripada simbol 2713 Al?
I The electron arrangement of aluminium atom is 2.8.3
Susunan elektron bagi atom aluminium ialah 2.8.3
II Aluminium atom has 13 protons and 27 neutrons.
Atom aluminium mempunyai 13 proton dan 27 neutron
III Aluminium atom has a proton number of 27 and 14 neutrons.
Nombor proton atom aluminium ialah 27 dan terdapat 14 neutron
IV The total number of proton and neutron of aluminium atom is 27.
Jumlah bilangan proton dan neutron atom aluminium ialah 27
A I and III C I and IV
B II and IV D II and III
7 Diagram 2 shows the electron arrangement of sodium atom.
Rajah 2 menunjukkan susunan elektron bagi atom natrium.
Diagram 2 / Rajah 2
Which is the correct standard representation for the atom? [Nucleon number: 23]
Perwakilan piawai yang manakah betul bagi atom tersebut? [Nombor nucleon : 23]
A Na1123
C Na1223
B Na2312
D Na2311
Na
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5
8 Diagram 3 shows the symbol for atom X.
Rajah 3 menunjukkan simbol bagi atom X.
Diagram 3 / Rajah 3
Which of the following represents the electron arrangement of ion X ?
Antara berikut, yang manakah mewakili susunan elektron bagi ion X- ?
A 2. 8 C 2. 8. 8. 1
B 2. 7 D 2. 6
9 Which of the following pairs of ion has the same of number of electrons?
[Proton number: Li = 3 , O = 8 , F = 9 , Na = 11 , Mg = 12 , Cl = 17 , Ca = 20 ]
Antara pasangan ion berikut, pasangan yang manakah mempunyai bilangan elektron
yang sama?
[Nombor proton: Li = 3 , O = 8 , F = 9 , Na = 11 , Mg = 12 , Cl = 17 , Ca = 20 ]
A Na+ and Li
+ C Mg
2+ and O
2-
B Cl-
and F- D Ca
2+ and Mg
2+
10 Which of the following isotopes is used to detect the leakage in a gas pipe?
Antara berikut, isotop manakah yang digunakan untuk mengesan kebocoran paip gas?
A Carbon-14 C Cobalt-60
B Iodine-131 D Sodium-24
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11 Which of the following set of substances contain all molecules?
Set bahan kimia yang manakah yang kesemuanya terdiri daripada molekul?
A Methane, chlorine, aluminium,, zinc nitrate
Metana, klorin, aluminium, zink nitrat
B Glucose, carbon dioxide, ammonia, ethanol
Glukosa, karbon dioksida, ammonia, etanol
C Helium, iron, calcium, nitrogen
Helium, besi, kalsium, nitrogen
D Zinc, nitrogen, copper, magnesium oxide
Zink, nitrogen, kuprum, magnesium oksida
12 The Table 2 shows the change of physical state and change of energy of four
substances.
Jadual 2 menunjukkan perubahan keadaan fizikal dan perubahan tenaga bagi empat
bahan.
Process
Proses
Change of physical state
Perubahan keadaan
fizikal
Name of process
Nama proses
Change of energy
Perubahan tenaga
W Gas to liquid
Gas kepada cecair
Condensation
Kondensasi
Heat is given out
Haba dibebaskan
X Liquid to gas
Cecair kepada gas
Melting
Peleburan
Heat is absorbed
Haba diserap
Y Liquid to solid
Cecair kepada pepejal
Freezing
Penyejukan
Heat is absorbed
Haba diserap
Z Solid to gas
Pepejal kepada gas
Sublimation
Pemejalwapan
Heat is given out
Haba dibebaskan
Table 2 / Jadual 2
Which of the processes given in Table 2 is true of the descriptions given?
Antara proses-proses yang dinyatakan dalam Jadual 2, yang manakah benar?
A W C Y
B X D Z
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13 Diagram 4 shows the electron arrangement in ions W -, X
+, Y
2- and Z
2+.
Rajah 4 menunjukkan susunan elektron dalam ion W -, X
+, Y
2- dan Z
2+.
Diagram 4 / Rajah 4
Which of the following shows the correct nucleon number of the ion?
Antara berikut, yang manakah menunjukkan nombor nukleon yang betul bagi ion yang
berkenaan?
Ion
Ion
Nucleon number
Nombor nukleon
A W- 20
B X+ 22
C Y2-
34
D Z2+
40
14 Which of the following processes occur when ammonium chloride is heated?
Antara proses-proses berikut, yang manakah akan berlaku apabila ammonium klorida
dipanaskan?
A Condensation
Kondensasi
C Sublimation
Pemejalwapan
B Melting
Peleburan
D Boiling
Pendidihan
X
X
X
X
X
X
W
10n
X
X X
X
X
X
X
X
X
X
X
12n
X
X X
X
+
Y 16nn X
X
X
X
X
X X
X
X
X
X
X
X
X
X X
X
X
2-
Z 20n
X
X
X
X
X
X X
X
X
X
X
X
X
X
X X
X
X
2+
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15 Diagram 5 shows the heating curve of solid benzoic acid.
Rajah 5 menunjukkan lengkung pemanasan bagi pepejal asid benzoik.
Diagram 5 / Rajah 5
Which statement can be deduced from Diagram 4?
Pernyataan manakah yang boleh dideduksikan daripada Rajah 4?
A No heat is absorbed in the first 2 minutes
Tiada haba diserap dalam 2 minit pertama
B Benzoic acid needs 8 minutes to melt completely
Asid benzoik memerlukan 8 minit untuk melebur selengkapnya
C Benzoic acid undergoes physical changes between 2nd
minute to 6th
minute
Asid benzoik mengalami perubahan fizikal di antara minit ke 2 hingga minit ke 6
D The attractive forces between particles of benzoic acid become stronger after 6
minutes.
Daya tarikan antara zarah-zarah asid benzoik menjadi semakin kuat selepas 6
minit.
16 Gypsum, CaSO4.2H2O is widely used in plastering of ceilings. What is the relative
formula mass of Gypsum?
Gipsum, CaSO4.2H2O digunakan secara meluas dalam pembuatan siling plaster.
Apakah jisim formula relatif bagi Gipsum?
A 164 C 172
B 272 D 180
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17 A compound with formula X2CO3 has a relative formula mass of 138. What is the
relative atomic mass of X? [Relative atomic mass : C = 12, O = 16]
Satu sebatian dengan formula X2CO3 mempunyai jisim formula relatif 138. Apakah
jisim atom relatif bagi X? [ Jisim atom relatif : C = 12, O = 16]
A 78 C 69
B 39 D 110
18 A compound of magnesium nitrite contains 72% of magnesium and 28% of nitrogen.
What is the empirical formula of magnesium nitrite?
[Relative atomic mass : N = 14, Mg = 24]
Suatu sebatian magnesium nitrit mengandungi 72% magnesium dan 28% nitrogen.
Apakah formula empirik bagi magnesium nitrit?
[Jisim atom Relatif : N = 14, Mg = 24]
A MgN2
C Mg2N3
B Mg2N D Mg3N2
19 Calculate the number of sulphur atoms present in 206 g of aluminium sulphate,
Al2 (SO4)3.
[Given relative formula mass : Al2 (SO4)3 = 342 ; Avogadros constant = 6 X 10 23
mole -1
]
Hitung bilangan atom sulfur yang terdapat dalam 206 g aluminium sulfat, Al2 (SO4)3.
[ Jisim formula relatif : Al2 (SO4)3 = 342 ; Pemalar Avogadro = 6 X 10 23
mol -1
]
A 0.74 x 6 x 10 23
atoms
C 0.79 x 6 x 10 23
atoms
B 1.8 x 6 x 10 23
atoms D 0.6 x 6 x 10 23
atoms
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20 Diagram 6 shows the set-up of apparatus for an experiment to determine the empirical
formula of magnesium oxide.
Rajah 6 menunjukkan susunan radas bagi eksperimen untuk menentukan formula
empirik magnesium oksida.
Diagram 6 / Rajah 6
Why is the crucible lid opened once in a while during the experiment?
Mengapakah penutup mangkuk pijar dibuka secara berkala semasa eksperimen?
A To avoid explosion
Untuk mencegah letupan
B To cool the magnesium
Untuk menyejukkan magnesium
C To allow oxygen gas to enter the crucible
Untuk membenarkan oksigen memasuki mangkuk pijar
D To see what happen inside the crucible
Untuk melihat apakah yang berlaku di dalam mangkuk pijar
21 Which of the following is not matched correctly?
Antara berikut, yang manakah tidak dipadankan dengan betul?
Substance
Bahan
Formula
Formula
A Calcium ion
Ion kalsium
Ca2+
B Copper(II) chloride
Kuprum(II) klorida
CuCl2
C Carbon dioxide
Karbon dioksida
CO2
D Ammonium ion
Ion ammonium
NH3
Heat
Haba
Magnesiu
m
Crucible
Mangkuk pijar
Lid
Penutup
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22 Which of the following statements is true for one mole of a substance?
Antara pernyataan berikut, yang manakah benar mengenai satu mol bahan?
A 1 mol of hydrogen gas contains 6.02 1023
atoms
1 mol gas hidrogen mengandungi 6.02 1023
atom
B 1 mol of magnesium contains 6.02 1023
molecules
1 mol magnesium mengandungi 6.02 1023
molekul
C 1 mol sodium chloride solution occupies 22.4 dm3 at s.t.p
1 mol larutan natrium klorida menempati 22.4 dm3 pada s.t.p
D 1 mol of water contains the same number of molecules as the number of atoms in
12 g carbon-12.
1 mol air mengandungi bilangan molekul yang sama dengan bilangan atom
dalam 12 g karbon-12
23 The chemical equation below shows a reaction between chlorine and iron.
Which of the following is the formula of the product?
Persamaan kimia di bawah menunjukkan tindak balas antara klorin dan besi.
Antara berikut, yang manakah formula bagi hasil yang terbentuk?
3Cl2(g) + 2Fe(s) 2
A FeCl3 C FeO
B FeCl2 D Fe2Cl
24 Diagram 7 shows the set-up of the apparatus to determine the empirical formula of a
metal oxide.
Rajah 7 menunjukkan susunan radas untuk menentukan formula empirik bagi oksida
logam.
Diagram 7 / Rajah 7
Dry hydrogen gas
Gas hidrogen
kering
Metal oxide
Oksida logam
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Which of the following metal oxides is suitable to be used in Diagram 7?
Antara oksida logam berikut, yang manakah sesuai digunakan dalam Rajah 7?
A Magnesium oxide
Magnesium oksida
C Copper(II) oxide
Kuprum(II) oksida
B Aluminium oxide
Aluminium oksida
D Zinc oxide
Zink oksida
25 The equation below shows the reaction between V and W,
Persamaan di bawah menunjukkan tindak balas di antara V dan W,
V + 2W X + Y
Which of the following statements is true?
Antara berikut pernyataan yang manakah benar?
A V and W are the products of the reaction
V dan W adalah hasil tindak balas
B X and Y are the reactants of the reaction
X dan Y adalah bahan tindak balas
C 1 mole of V react with 1 mole of W to produce 1 mole of X and 1 mole of Y
1 mol V bertindak balas dengan 1 mol W menghasilkan 1 mol X dan 1 mol Y
D 1 mole of V react with 2 moles of W to produce 1 mole of X and 1 mole of Y
1 mol V bertindak balas dengan 2 mol W menghasilkan 1 mol X dan 1 mol Y
26 When copper(II) carbonate is heated , it decomposes to copper(II) oxide and carbon
dioxide gas. The equation for the reaction is
Apabila kuprum(II) karbonat dipanaskan, ia akan terurai kepada kuprum(II) oksida
dan gas karbon dioksida. Persamaan tindak balas ialah
CuCO3 (s) CuO (s) + CO2 ( g)
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12.4 g of of copper(II) carbonate decomposes completely. What is the mass of
copper(II) oxide formed ? [ Relative atomic mass : Cu = 64, O = 16, C = 12 ]
12.4 g kuprum(II) karbonat terurai dengan lengkap. Berapakah jisim kuprum(II)
oksida yang terhasil? [ Jisim atom relatif : Cu = 64, O = 16, C = 12 ]
A 8.0 g C 4.4 g
B 44.0 g D 80.0 g
27
Magnesium reacts with oxygen to form magnesium oxide.
Magnesium bertindak balas dengan oksigen untuk menghasilkan magnesium oksida
2Mg + O2 2MgO
What is the mass of magnesium oxide formed when 2.4 g of magnesium reacts with
excess oxygen? [ Relative atomic mass: Mg = 24 , O = 16]
Berapakah jisim magnesium oksida yang terhasil apabila 2.4 g magnesium bertindak
balas dengan oksigen berlebihan? [ Jisim atom relatif : Mg = 24, O = 16]
A 1.6 g C 4.0 g
B 3.6 g D 8.0 g
28
The following chemical equation shows the reaction between sodium and oxygen.
Persamaan kimia berikut menunjukkan tindak balas antara natrium dan oksigen
nNa(s) + O2(g) m
What are the values of n, m and the formula in the box?
Apakah nilai bagi n, m dan formula bagi bahan dalam kotak di atas?
n m Formula
A 2 2 Na2O
B 4 2 Na2O
C 2 2 NaO2
D 2 4 NaO
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29 Diagram 8 shows the set-up of the apparatus used to study the reaction between a
metal oxide and carbon.
Rajah 8 menunjukkan susunan radas yang digunakan untuk mengkaji tindak balas
antara suatu oksida logam dan karbon.
Diagram 8 / Rajah 8
Which of the following metal oxide will turn the lime water cloudy ?
Oksida logam yang manakah akan menyebabkan air kapur menjadi keruh?
A Magnesium oxide
Magnesium oksida
C Calcium oxide
Kalsium oksida
B Aluminium oxide
Aluminium oksida
D Copper(II) oxide
Kuprum(II) oksida
30 Hydrogen peroxide decomposes according to the following equation:
Hidrogen peroksida terurai berdasarkan persamaan berikut:
2 H2O2 2 H2O + O2
One mole of hydrogen peroxide is decomposed. What is the volume of oxygen gas
released? [1 mol of gas occupies 24 dm3 at room temperature and pressure]
Satu mol hidrogen peroksida telah terurai. Berapakah isipadu gas oksigen yang
terbebas? [1 mol gas menempati 24 dm3
pada suhu dan tekanan bilik]
A 96 dm 3 C 12 dm
3
B 24 dm 3 D 48 dm
3
Metal oxide and
carbon
Oksida logam dan
karbon
Lime water
Air kapur
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31 Which of the following elements are in Group 1 in the Periodic Table of Elements?
Antara unsur-unsur berikut, yang manakah merupakan unsur kumpulan 1 dalam
Jadual Berkala Unsur?
A Sodium and Chlorine
Natrium dan Klorin
C Lithium and Hydrogen
Litium dan hidrogen
B Sodium and Magnesium
Natrium dan Magnesium
D Lithium and Potassium
Litium dan Kalium
32 Table 3 shows the elements in Period 3 of the Periodic Table of elements. The
elements can react with oxygen to form oxides.
Jadual 3 menunjukkan unsur-unsur dalam Kala 3 Jadual Berkala Unsur. Unsur-unsur
tersebut boleh bertindak balas dengan oksigen untuk membentuk oksida.
Elements
Unsur
Na
Mg
Al
Si
P
S
Cl
Table 3 / Jadual 3
Which of the following element form oxide that can react with both hydrochloric acid
and sodium hydroxide solution?
Manakah antara unsur-unsur berkenaan boleh membentuk oksida yang boleh
bertindak balas dengan asid hidroklorik dan larutan natrium hidroksida?
A Na C Al
B S D Cl
33 The information below describes the properties of element X
Maklumat di bawah menerangkan sifat-sifat unsur X
Which of the following elements best fits the above properties?
Antara berikut, unsur manakah yang memenuhi sifat-sifat di atas?
A Chlorine
Klorin
C Argon
Argon
B Potassium
Kalium
D Magnesium
Magnesium
Conducts electricity
Soft and shiny
Reacts vigorously with water
Mengkonduksikan elektrik
Lembut dan berkilau
Bertindak balas sangat cergas dengan air
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34 Which of the following statements best explain the stability of noble gases?
Antara pernyataan berikut, yang manakah menerangkan dengan tepat tentang
kestabilan gas Adi?
A Have octet electron arrangement except helium
Mempunyai susunan elektron oktet kecuali helium
B Can accept, lose or share electron
Boleh menerima, hilang atau berkongsi electron
C Have 8 valence electrons
Mempunyai 8 elektron valens
D Exists as polyatomic gases
Wujud sebagai gas poliatom
35 Atom of element X has a proton number of 13. Where is X located in the Periodic
Table of Elements?
Atom unsur X mempunyai nombor proton 13. Di manakah X terletak dalam Jadual
Berkala Unsur?
Group
Kumpulan
Period
Kala
A 3 13
B 13 3
C 3 3
D 13 2
36 Table 4 shows the proton number of elements S, T, U and V.
Jadual 4 menunjukkan nombor proton bagi unsur S, T, U dan V
Element
Unsur
S T U V
Proton number
Nombor proton
11 14 16 19
Table 4 / Jadual 4
What is the arrangement of elements S, T, U and V in ascending order of atomic size?
Apakah susunan unsur S, T, U dan V mengikut tertib menaik saiz atom?
A S, T, U, V C U, T, S, V
B S, V, T, U D V, U, T, S
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37 Astatine is below iodine in Group 17 of Periodic Table.
Which of the following statements is true for astatine?
Astatin berada di bawah iodin dalam Kumpulan 17 Jadual Berkala Unsur.
Antara berikut, pernyataan yang manakah benar mengenai astatin?
A Form basic oxide
Membentuk oksida bes
C Solid at room temperature
Pepejal pada suhu bilik
B Exists as monoatom
Wujud sebagai monoatom
D More electronegative than iodine
Lebih elektronegatif dari iodin
38 In the Periodic Table, element X is in group 1 and element Y is in group 17.
The letters used are not the actual symbol of the elements.
Dalam Jadual Berkala, unsur X berada dalam kumpulan 1 dan unsur Y berada dalam
kumpulan 17.
Simbol yang digunakan bukan simbol sebenar unsur berkenaan.
Which of the following chemical equation is true for the reaction between element X
and element Y?
Antara persamaan kimia berikut, yang manakah benar bagi tindak balas antara unsur
X dan unsur Y?
A 2X + Y2 XY
C 2X + Y X2Y
B X + Y2 XY2 D X + Y XY
39 Which of the following electron arrangements is found in a noble gas atom?
Antara susunan elektron berikut, yang manakah susunan elektron bagi atom gas adi?
A 1 C 2.7
B 2. 8. 2 D 2. 8
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40 Which of the characteristics indicates that chromium is a transition element?
Sifat yang manakah menunjukkan bahawa kromium ialah unsur peralihan?
A It can form a basic oxide.
Ia boleh membentuk oksida bes
B It can form coloured solution.
Ia boleh membentuk larutan berwarna
C It can conduct electricity.
Ia boleh mengkonduksi elektrik
D It has a high melting point.
Ia mempunyai takat lebur yang tinggi
41 Table 4 shows the position of two elements, P and Q, in the Periodic Table of
Elements.
Jadual 4 menunjukkan kedudukan dua unsur, P dan Q, dalam Jadual Berkala Unsur.
Elements
Unsur
Group
Kumpulan
Period
Kala
P 1 3
Q 17 3
Which of the following is true about elements P and Q?
Antara berikut, yang manakah benar tentang unsur P dan Q?
A The atoms of P are smaller than the atoms of Q
Atom P lebih kecil daripada atom Q
B Atoms of P have stronger attraction for other electrons
Atom P menarik elektron lebih kuat berbanding Q
C The number of positive charges in the nucleus of P is less than Q
Jumlah cas positif dalam nukleus P kurang daripada Q
D Atoms of Q have a higher tendency than P to release electrons
Atom Q lebih cenderung menderma elektron berbanding atom P
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42 Diagram 9 shows part of the Periodic Table.
Rajah 9 menunjukkan sebahagian daripada Jadual Berkala.
X
Diagram 9 / Rajah 9
What are the electron arrangements of atoms of element X?
Apakah susunan elektron bagi atom unsur X?
A 2. 6 C 2. 8. 6
B 2. 8 D 2. 8. 8
43 Diagram 10 shows the electron arrangement of ion T.
Rajah 10 menunjukkan susunan elektron bagi ion T.
Diagram 10 / Rajah 10
Where is element T placed in the Periodic Table?
Di manakah kedudukan unsur T dalam Jadual Berkala?
Group
Kumpulan
Period
Kala
A 17 2
B 18 2
C 2 18
D 2 17
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20
44 Diagram 11 shows the formation of sodium ion.
Rajah 11 menunjukkan pembentukan ion natrium.
Diagram 11 / Rajah 11
Which of the following statements are true?
Antara berikut, pernyataan yang manakah benar?
I Sodium atom has an unstable electron arrangement.
Atom natrium mempunyai susunan electron yang tidak stabil
II Sodium ion has an octet electron arrangement as in neon atom.
Ion natrium mempunyai susunan electron oktet seperti atom neon
III Sodium atom donates an electron to form a positive charge ion.
Atom natrium menderma elektron untuk membentuk ion bercas positif
IV Sodium atom reacts with non-metals atoms to form ionic compounds.
Atom natrium bertindak balas dengan atom bukan logam untuk membentuk
sebatian ionik
A I and III only C II and III only
B I, III and IV only D I, II, III and IV
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45 Diagram 12 shows the electron arrangement of a compound formed between atoms X
and Y.
Rajah 12 menunjukkan susunan elektron bagi sebatian yang terbentuk antara atom X
dan Y.
Diagram 12 / Rajah 12
Which of the following statements is true about the compound?
Antara pernyataan berikut, yang manakah benar tentang sebatian tersebut?
A It is an ionic compound
Sebatian tersebut merupakan sebatian ionik.
B The compound is formed by covalent bonds
Sebatian terbentuk melalui ikatan kovalen
C The compound has a high boiling point
Sebatian tersebut mempunyai takat didih yang tinggi
D The compound is formed by electron transfer
Sebatian terbentuk melalui perpindahan elektron
46 Which of the following is a property of covalent compound?
Antara berikut yang manakah sifat sebatian kovalen?
A Conducts electricity in liquid state.
Mengkonduksi elektrik dalam keadaan cecair.
B Dissolves in organic solvents.
Larut dalam pelarut organik.
C Requires a great amount of heat to break the attractive forces between
molecules.
Memerlukan haba yang banyak untuk mengatasi daya tarikan antara molekul.
D Solid covalent compounds consist of particles which are scattered randomly.
Pepejal sebatian kovalen mengandungi zarah-zarah yang tersebar secara
rawak.
X X x Y x
x
x
x x
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22
47 The proton numbers of a few elements are as shown:
Nombor proton beberapa unsur adalah seperti berikut:
Element
Unsur
Proton Number
Nombor proton
H 1
Na 11
Mg 12
S 16
With the atoms of which element would chlorine atoms combine by sharing electrons?
Atom unsur manakah yang akan bergabung dengan atom klorin secara perkongsian
elektron?
I H III Mg
II Na IV S
A I only
I sahaja
C II and III only
II dan III sahaja
B II only
II sahaja
D I and IV only
I dan IV sahaja
48 The number of valence electrons of atoms X and Y are 2 and 7 respectively.
Which of the following chemical formulae and types of bonding are true for the
compound formed between X and Y?
Bilangan elektron valens bagi atom X dan Y adalah 2 dan 7 masing-masing.
Antara berikut, formula kimia dan jenis ikatan yang manakah benar bagi sebatian
yang terbentuk antara X dan Y?
Chemical Formula
Formula Kimia
Type of Bonding
Jenis Ikatan
A XY2 ionic
B XY2 covalent
C X2Y ionic
D X2Y covalent
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23
49 Diagram 13 shows the electron arrangement of atoms P, Q and R.
Rajah 13 menunjukkan susunan elektron bagi atom P, Q dan R.
Diagram 13 / Rajah 13
R can react with P and Q to form two different compounds. What are the formulae of
the compounds formed?
R boleh bertindak balas dengan P dan Q untuk membentuk dua sebatian yang
berbeza. Apakah formula sebatian-sebatian yang terbentuk?
P and R
P dan R
Q and R
Q dan R
A P2R QR2
B P2R QR
C PR QR2
D PR2 QR2
P Q R
-
24
50 Diagram 14 shows the electron arrangement of a carbon dioxide molecule.
Rajah 14 menunjukkan susunan elektron bagi molekul karbon dioksida.
Which of the following is true?
Antara berikut, yang manakah benar?
A Each oxygen atom contributes one electron for sharing.
Setiap atom oksigen menyumbang satu elektron untuk dikongsi.
B Four double covalent bonds are formed in a carbon dioxide molecule.
Empat ikatan kovalen ganda dua terbentuk dalam satu molekul karbon dioksida
C One carbon atom contributes four electrons to be shared by two oxygen atoms.
Satu atom karbon menyumbang empat elektron untuk dikongsi bersama dua
atom oksigen.
D One carbon atom requires two electrons to achieve the octet electron
arrangement.
Satu atom karbon memerlukan dua elektron untuk mencapai susunan elektron
oktet.
Diagram 14 / Rajah 14
O C O
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25
MODULE 2
1. Diagram 1 shows part of the Periodic Table of Elements.
Rajah 1 menunjukkan sebahagian daripada Jadual Berkala Unsur.
Na Cl Ar
K Cu
Diagram / Rajah 1
(a) (i) State the name of the element represented by the symbol Cu in Diagram 1. Nyatakan nama bagi unsur yang diwakili dengan simbol Cu dalam Rajah 1.
.. [1 mark]
(ii) Cu is a transition element.
State one special characteristic of the transition elements.
Cu ialah satu unsur peralihan.
Nyatakan satu sifat istimewa unsur peralihan itu.
.. [1 mark]
(b) Which element is very stable and not reactive? Explain your answer. Unsur yang manakah sangat stabil dan tidak reaktif?Terangkan jawapan anda.
...
...
... [3 marks]
(c) Na and K react with water to produce alkaline solution. Which element more reactive when react with water? Explain your answer.
Na dan K bertindak balas dengan air menghasilkan larutan beralkali.
Unsur yang manakah lebih reaktif apabila bertindak balas dengan air.
Terangkan jawapan anda
...
...
... [3 marks]
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26
(d) (i) Na and Cl in the same period. Which element is bigger atomic size? Na dan Cl dalam kala yang sama. Unsur yang manakah mempunyai saiz atom
yang lebih besar?
.. [1 mark]
2 Table 2 shows the diagram of electron arrangement of carbon atom, oxygen atom and
sodium atom.
Jadual 2 menunjukkan gambar rajah susunan elektron bagi atom karbon, atom oksigen
dan atom natrium.
Carbon atom
Atom karbon
Oxygen atom
Atom oksigen
Sodium atom
Atom natrium
Table / Jadual 2
(a) Write the electron arrangement for carbon atom. Tuliskan susunan elektron bagi atom karbon.
. [1 mark]
(b) Carbon combines with oxygen to form a compound. Karbon bergabung dengan oksigen untuk membentuk suatu sebatian.
(i) What is the type of the compound formed? Apakah jenis sebatian yang terbentuk?
[1 mark]
(ii) Draw the diagram of electron arrangement of this compound. Lukiskan gambar rajah susunan elektron bagi sebatian tersebut.
[2 mark]
C O Na
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27
(iii)State one physical property of the compound.
Nyatakan satu sifat fizik bagi sebatian tersebut.
[1 mark]
(c) Oxygen combines with sodium to form another compound. Oksigen bergabung dengan natrium membentuk satu lagi sebatian.
(i) What is the name of the compound formed? Apakah nama bagi sebatian yang terbentuk?
[1 mark]
(ii) Write the chemical equation for the reaction between oxygen and sodium. Tuliskan persamaan kimia bagi tindak balas antara oksigen dan natrium.
[2 marks]
(iii)The compound formed has a high melting point. Explain why.
Sebatian yang terbentuk mempunyai takat lebur yang tinggi. Terangkan
mengapa.
[2 marks]
3 Graph 1 shows the temperature against time when solid P is heated.
Graf 1 menunjukkan graf suhu melawan masa bagi pemanasan pepejal P.
Graph 1[Graf 1]
t1
Temperature / oC
Suhu / oC
Time / s
Masa /s t2
t3
t4
t5
28
83
136
200
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28
(a) Based on Graph 1 ,
Berdasarkan Graf 1,
(i)
(ii)
What is meant by melting point ?
Apakah yang dimaksudkan dengan takat lebur ?
................................................................................................................................
...............................................................................................................................
[1 mark]
State the boiling point of substance P
Nyatakan takat didih bahan P
[1 mark]
(iii) Explain why the temperature remains constant from time t1 to t2.
Terangkan kenapa suhu tidak berubah dari masa t1 hingga t2.
................................................................................................................................
................................................................................................................................
[2 marks]
(b) Diagram 3.1 and Diagram 3.2 shows the apparatus set up of two experiments
Rajah 3.1 dan Rajah 3.2 menunjukkan susunan radas bagi dua eksperimen
Purple colour of potassium manganate(VII) crystal
spread throughout water
Warna ungu kalium manganat(VII) merebak ke seluruh
air
Diagram 3.1 [Rajah 3.1]
After 3 days
Selepas 3 hari
Purple colour of potassium manganate(VII) crystal s
pread throughout the gel
Warna ungu kalium manganat(VII) merebak ke seluruh agar-
agar
Potassium manganate(VII) crystals
Hablur kalium manganat(VII)
After 1 hour
Selepas 1 jam
Potassium manganate(VII) crystals
Hablur kalium manganat(VII)
Water
Gel
Agar-agar
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29
Diagram 3.2 [Rajah 3.2]
(i) State the name of the process involved in the experiments Nyatakan nama proses yang terlibat dalam ke dua-dua eksperimen
....................................................................................................................................
[1 mark]
(ii) State the type of particle present in potassium manganate(VII) crystals. Nyatakan jenis zarah yang terdapat dalam hablur kalium manganat(VII)
[1 mark]
(iii)Based on Diagram 3.1 and Diagram 3.2, explain the differences in the observation by
using kinetic theory of matter.
Berdasarkan Rajah 3.1 dan Rajah 3.2, terangkan perbezaan dalam pemerhatian
dengan menggunakan teori kinetik jirim.
....................................................................................................................................
[3 marks]
4(a) Diagram 4 shows the standard representation of two isotopes of chlorine atoms.
Rajah 4 menunjukkan perwakilan atom bagi dua isotop atom klorin.
Diagram 4
Rajah 4
(i) Based on Diagram 4, state the meaning of isotope. Berdasarkan Rajah 4, nyatakan maksud isotop.
..............................................................................................................................
..............................................................................................................................
[2 marks]
Cl3517
Cl3717
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30
(ii) Determine the number of neutrons in Tentukan bilangan neutron dalam
Cl3517 :
Cl3717 :.
[2 marks]
(iii) State one use of chlorine in our daily lives. Nyatakan satu kegunaan klorin dalam kehidupan seharian.
.. [1 mark]
(b) X is a substance that has melting point of 43oC and boiling point of 89
oC.
X adalah satu bahan yang mempunyai takat lebur 43
0C dan takat didih 89
0C.
(i) Sketch a graph of temperature against time when substance X is heated from
30 0C to 80
0C.
Lakarkan graf suhu melawan masa apabila bahan X dipanaskan daripada 30 0C hingga 80
0C.
[2 marks]
(ii) Explain the arrangement of particles in substance X at : Terangkan susunan zarah dalam bahan X pada :
30 0C :
80 0C :
. [2 marks]
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31
5.
(a)
Diagram 5.1 shows an apparatus set-up to determine the empirical formula of magnesium oxide.
Rajah 5.1 menunjukkan susunan radas untuk menentukan formula empirik magnesium oksida.
Why is it necessary to clean the magnesium with sand paper before the weighing process?
Mengapakah magnesium perlu dibersihkan menggunakan kertas pasir sebelum proses menimbang?
.....................................................................................................................................
[1 mark]
Table 5.2 shows the results for the experiment to determine the empirical formula of magnesium
oxide.
Jadual 5.2 menunjukkan keputusan bagi satu eksperimen untuk menentukan formula empirik bagi
magnesium oksida.
Mass of crucible + lid
Jisim mangkuk pijar + penutup 28.24 g
Mass of crucible + lid + magnesium ribbon
Jisim mangkuk pijar + penutup + pita magnesium 30.64 g
Mass of crucible + lid + magnesium oxide
Jisim mangkuk pijar + penutup + magnesium oxide 32.24 g
Table 5.2
Jadual 5.2
Heat
Dipanaskan
Magnesium ribbon
Pita magnesium
Diagram5.1
Rajah 5.1
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32
(b)
Based onTable 5.2, complete Table 5.3 and determine the empirical formula of magnesium oxide.
Berdasarkan Jadual 5.2, lengkapkan Jadual 5.3 dan seterusnya tentukan formula empirik bagi
magnesium oksida:
[Relative atomic mass: O = 16, Mg = 24]
[Jisim atom relatif: O = 16, Mg = 24]
Element
Unsur Mg O
Mass (g)
Jisim
Number of moles
Bilangan mol
Simplest ratio of moles
Nisbah ringkas bilangan mol
Empirical formula
Formula empiric
Table 5.3
Jadual 5.3
[4 marks]
(c) What must be done to ensure that the reaction has completed?
Apakah yang perlu dilakukan untuk memastikan tindak balas telah lengkap?
.. [1 mark ]
(d) Write the chemical equation for the reaction in the experiment.
Tuliskan persamaan kimia bagi tindak balas dalam eksperimen itu.
.................................................................................................................................
[2marks]
(e) Can the empirical formula of copper (II) oxide be determined using this same method? Give the
reason why.
Bolehkah formula empirik bagi kuprum(II) oksida ditentukan menggunakan cara yang sama?
Berikan alasannya .
....................................................................................................................................
[2marks]
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33
6 Diagram 6 shows the set up apparatus of an experiment to determine the empirical
formula of copper oxide.
Rajah 6 menunjukkan susunan radas eksperimen untuk menentukan formula empiric
bagi kuprum oksida.
Diagram 6
Rajah 6
(a) What is the meaning of empirical formula?
Apakah maksud formula empirik?
....... [1 mark]
(b) (i) Name an acid and a metal that can be used to prepare hydrogen gas in
this experiment.
Namakan suatu asid dan logam yang boleh digunakan untuk menyediakan
gas hidrogen dalam eksperimen ini.
[1 mark]
ii)
Write a balanced chemical equation for the reaction between the acid and
the metal in (b) (i).
Tuliskan persamaan kimia yang seimbang untuk tindak balas yang
berlaku di antara asid dan logam di (b) (i).
.... [1 mark]
Copper(II) oxide
Kuprum(II) oksida
Heat
Panaskan
Anhydrous calcium chloride, CaCl2
Kalsium klorida kontang, CaCl2
Hydrogen gas
Gas hidrogen
Porcelain dish
Mangkuk
porselin
-
34
Table 6 shows the results of an experiment carried out by a student.
Jadual 6 menunjukkan keputusan eksperimen yang dilakukan oleh pelajar.
Mass of combustion tube + porcelain dish
Jisim tiub pembakaran + mangkuk porselin
30.24g
Mass of combustion tube + porcelain dish + copper (II) oxide
Jisim tiub pembakaran + mangkuk porselin + kuprum(II)
oksida
32.26g
Mass of combustion tube + porcelain dish + copper
Jisim tiub pembakaran + mangkuk porselin + kuprum
31.86g
Table 6 Jadual 6
(c)(i) Calculate the number of moles of copper in this reaction.
[Relative atomic mass : Cu = 64]
Kirakan bilangan mol kuprum dalam tindak balas ini.
[Jisim atom relatif : Cu= 64]
[2 mark]
(ii) Calculate the number of moles of oxygen in this reaction.
[Relative atomic mass : O = 16]
Kirakan bilangan mol oksigen dalam tindak balas ini.
[Jisim atom relative: O= 16]
[2 mark]
(d)(i) Determine the empirical formula of copper oxide.
Tentukan formula empirik kuprum oksida.
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35
[2 mark]
(ii) Name another metal oxide with empirical formula that can be determined using
the same method.
Namakan suatu oksida logam yang lain di mana formula empiriknya ditentukan
dengan kaedah yang sama.
.. [1 mark]
(e) M is a reactive metal. Suggest a method to determine the empirical formula of
the oxide of M.
M merupakan suatu logam reaktif. Cadangkan satu kaedah untuk menentukan
formula empirik bagi oksida M.
...............................................................................................................................
[1 mark]
KERTAS SOALAN TAMAT
Sumbangan: Panel-Q, Majlis Guru Cemerlang Negeri Melaka
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