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SULIT 4541/1 Kimia Kertas 1 September 2006 1¼ jam
PEPERIKSAAN PERCUBAAN SPM 2006
MAKTAB RENDAH SAINS MARA
KIMIA
Kertas 1
Satu jam lima belas minit
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU 1. Kertas soalan ini adalah dalam dwibahasa. 2. Soalan di halaman kiri adalah dalam bahasa Melayu. Soalan di halaman kanan
adalah yang sepadan dalam bahasa Inggeris. 3. Calon dikehendaki membaca maklumat di halaman 2 atau halaman 3
Kertas soalan ini mempunyai 47 halaman bercetak
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INFORMATION FOR CANDIDATES 1. This question paper consists of 50 questions. 2. Answer all questions. 3. Answer each question by blackening the correct space on the answer sheet. 4. Blacken only one space for each question. 5. If you wish to change your answer, erase the blackened mark that you have made.
Then blacken the space for the new answer. 6. The diagrams in the questions provided are not drawn to scale unless stated. 7. You may use a non -programmable scientific calculator.
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Question 1 to Question 50, are followed by four options A, B, C, and D. Choose the best option for each question and blacken the corresponding space on the objective answer sheet. 1 The diagram shows the apparatus set – up to investigate Process X.
What is Process X? A Diffusion
B Condensation
C Evaporation
D Sublimation
2 Which of the following is the common characteristic for isotope s of an element?
A Physical properties
B Chemical properties
C Nucleon number
D Number of neutrons
3 What is the definition of a mole?
A The volume occupied by 6.02 X 1023 particles
B The atomic mass of a substance which consist of 6.02 X 1023 atoms
C The molecular mass of a substance which consist of 6.02 X 1023 molecules
D The quantity of a substa nce which has the same number of particles as the number of atoms in 12.00 g of carbon-12
nitrogen dioxide (brown) nitrogen dioxide
(brown)
Process X Gas jar cover
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4 The diagram shows an electrochemical cell.
What is the energy conversion involved?
A Electrical energy à heat energy
B Chemical energy àelectrical energy
C Electrical energy à chemical energy D Chemical energy à heat energy
5 The diagram shows the flow of ammonia gas into distilled water which contains a few drops of phenolphthalein
Which of the following is the correct observation?
A Solution remains colourless
B Solution turns from red to purple
C Solution turns from green to red
D Solution turns from colourless to pink
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6 Which of the following is the main usage of the product in Haber Process?
A To produce pesticides
B To produce paint
C To produce detergent
D To produce fertilizers
7 Propane and propene are members of different homologous series. Which of the following is the general formulae representing the two compounds?
Propane Propene
A CnH2n CnH2n+2
B CnH2n+2 CnH2n
C C2nHn+2 CnH2n+1
D CnH2n+1 CnH2n+2
8 The equation below represents the fermentation reaction
What is substance Y? A Ethanol
B Glucose
C Glycerol
D Ethanoic acid
9 Penicillin is used for A reducing anxiety
B reducing pain
C controlling the level of glucose in blood
D destroying or preventing the growth of bacteria
C6H12O6 ? Y + CO2
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10 The diagram shows a label on a bottle of ‘Orange Juice XYZ’.
What is the function of sulphur dioxide?
A To make the drink more concentrated
B To give colour to the drink
C To give orange flavour to the drink
D To make the drink last longer
11 Which of the following substance consists of free atoms?
A Nitrogen gas
B Xenon gas
C Glucose powder
D Sodium chloride
12 The diagram shows the molecular formula for glucose.
Which of the following substance has similar empirical formula as that of glucose?
Substance Molecular Formula
A Ethanol C2H6O
B Ethanal C2H4O
C Ethanoic acid C2H4O2
D Methyl ethanoa te C3H6O2
Orange Juice XYZ Ingredients: water, sugar, ascorbic acid, sulphur dioxide,
aspartame, E110, E102, vitamin A and D. Best before: 15 Dec 2006
C6H12O6
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13 The table shows observations for the reaction between ethanoic acid and magnesium.
Reaction Observation
Magnesium powder + glacial ethanoic acid No changes
Magnesium powder + glacial ethanoic acid + water Effervescence
Which of the following explains the observation?
A Acetic acid dissolves in water producing hydrogen gas
B Acetic acid ionises to produce hydrogen ions in the presence of water
C Water ionises to hydrogen ions and react with magnesium
D Acetic acid ionises to hydrogen ions which combine with each other to form hydrogen gas
14 The table shows information about two acids
Acid Concentration pH Sulphuric acid 0.01 mol dm-3 1.1
Hydrochloric acid 0.01 mol dm-3 2.0
. Which of the following statement is true?
A Sulphuric acid is more concentrated than hydrochloric acid
B Sulphuric acid is a strong acid while hydrochloric acid is a weak acid
C Concentration of H+ ions in sulphuric acid is higher than that of
hydrochloric acid
D Sulphuric acid ionises completely while hydrochloric acid ionizes partially in
water
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15 Figure shows the atomic arrangement in an alloy.
This alloy is harder than its pure metal because A arrangement of atoms in alloy is more orderly
B vibration of atoms in alloy is more vigorous
C layers of atoms in alloy is less able to slide
D absence of empty spaces between atoms in alloy
16 The diagram shows vases made from pewter.
Which of the following is the main metal used to produce pewter?
A Tin
B Copper
C Antimony
D Aluminium
X Atom
Y Atom
Z Atom
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17 The diagram shows the chemical cha nge that occurs to compound G.
Which of the following is compound G?
A n- butane
B But - 1 - ene
C But - 2 - ene
D Butan - 2 - ol
18 Below is a list of chemicals used by a student to prepare ethyl ethanoate.
• 2 cm3 concentrated sulphuric acid • 10 cm3 aqueous solution of ethanoic acid 2.0 mol dm-3 • 15 cm3 pure ethanol
The mixture was heated under reflux for 30 minutes. At the end of the preparation the student failed to detect the presence of ethyl ethanoate. Which of the following causes the failure? A Pure ethanoic acid is not used
B The amount of sulphuric acid used is not enough
C 30 cm3 of pure ethanol should have been used
D Longer duration of heating under reflux is needed
19 Rusting causes a lot of financial loss. Which of the following is rust? A Zink oxide
B Iron(II) oxide
C Iron(III) oxide
D Lead(II) oxide
G Bromine in CCl4
H Br Br H ¦ ¦ ¦ ¦ H - C - C - C - C - H ¦ ¦ ¦ ¦ H H H H
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20 The diagram shows the structure of a soap ion.
Which of the following is true about M when soap is used to clean greasy stain?
A M is alkaline
B M is hydrophilic
C Soluble in grease
D Reduce the surface tension of water
21 The diagram shows the particle arrangement of substance X at 100O C.
Which is the most probable melting and boiling points for X?
Melting point / O C Boiling point / O C
A -123 -78
B -17 135
C 0 78
D 111 400
M N
Particle of X
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22 The diagram shows the position of elements P, Q, R and S in the Periodic Table of Elements.
R P S Q
What characteristics of P, Q, R and S?
P Q R S
A Metal Non-metal Inert gas Transition element B Non-metal Inert gas Metal Transition element C Metal Transition
element Non-metal Inert gas
D Inert gas Non-metal Transition element
Metal
23 Element T has the following characteristics :
Element T could be A Rubidium
B Silicon
C Manganese
D Magnesium
24 The table shows information about atoms of elements X, Y and Z.
Element Proton Number X 11
Y 14 Z 17
Based on the information given, it can be expected that A the atomic radius decreases from X to Z
B the density of atom decreases from X to Z
C elements X, Y and Z are in Period 2 of the Periodic Table
D X oxide is acidic, Y oxide is amphoteric and Z oxide is basic
• High melting and boiling points. • Forms compounds with various oxidation numbers. • T oxide acts as catalyst.
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25 The diagram shows the formation of a compound. + à The bond in the compound is formed by
A donation of electrons
B sharing of electrons
C receiving of electrons
D exchanging of electrons
26 M is an ionic compound and dissolves in water to form a solution that conducts
electricity. Which of the following could be compound M?
A Sodium chloride
B Hydrogen chloride
C Carbon disulphide
D Lead(II) chloride
27 Which of the following equation represents the most suitable reaction to prepare an insoluble salt?
A Pb(OH)2 + 2HCl à PbCl2 + 2H2O
B Pb + H2SO4 à PbSO 4 + H2
C AgNO3 + NaCl à AgCl + NaNO3
D CaO + H2SO4 à CaSO4 + H2O
Carbon Chlorine Tetrachloromethane
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28 The diagram shows the set-up of the apparatus for a Voltaic cell.
Which of the following is true about the Voltaic cell? I The aluminium strip becomes thinner
II Aluminium is the positive terminal
III Brown solid deposited at the copper strip
IV Bubbles of colourless gas formed at the copper strip
A I and IV only
B II and IV only
C I and III only
D I, II and III only
29 The diagram shows a sports equipment in which the frame is made from a composite
material.
Which of the following is the property of the composite material?
A High tensile strength
B Hard and brittle
C Heat resistant
D Transparent
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30 The chemical equation shows a reaction between calcium carbonate with hydrochloric acid.
Which of the following changes cannot be used to determine the rate of reaction? A Change in the pH of the mixture
B Decrease in mass of calcium carbonate
C Increase in mass of calcium chloride
D Change in volume of carbon dioxide released
31 The equation shows the reaction between zink and hydrochloric acid. Zn (p) + 2HCl (ak) à ZnCl2(ak) + H2(g)
Which of the following statements are true about the reaction? I The mass of zinc decreases with time
II pH of hydrochloric acid increases with time
III Rate of hydrogen gas released increases w ith time
IV Frequency of collisions between H + ions and zinc atoms decreases with time
A I and III only
B III and IV only
C I, II and IV only
D II, III and IV only
CaCO3 + 2HCl ? CaCl2 + CO2 + H2O
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32 In an experiment, 100 cm3 of 1.0 mol dm-3 hydrochloric acid reacts with excess magnesium to produce hydrogen gas. The graph of the volume of hydrogen gas against time is drawn and curve X is obtained.
If the experiment is repeated using another solution, which solution will produce curve Y?
A 50 cm3 of 1.0 mol dm-3 nitric acid
B 50 cm3 of 1.0 mol dm-3 ethanoic acid
C 25 cm3 of 1.0 mol dm-3 sulphuric acid
D 25 cm3 of 1.0 mol dm-3 hydrochloric acid
33 The diagram shows the structural formula for a compound extracted from pineapple.
Which of the following are needed to produce the compound synthetically?
Alcohol Carboxylic acid
A n- butanol Propanoic acid
B Ethanol Butanoic acid
C Ethanol Propanoic acid
D n- butanol Ethanoic acid
Volume of hydrogen, cm3
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34 The diagram shows the apparatus set-up of an experiment to study redox reaction. After 20 minutes, the colourless solution around electrode X changes to brown while
the solution around electrode Y changes from orange to green.
Which of the following statement explains the observation of the experiment?
A Iodide ions are oxidized to iodine molecules.
B Oxidation number of iodine increases from 0 to +1.
C Electron flows from electrode Y to electrode X through the external circuit
D Oxidation number of chromium decreases from +6 to +2
35 The table shows the observations of an experiment involving heating of two substances.
Substances Observation
Carbon powder and metal P oxide Glow
Hydrogen gas and metal Q oxide Glow
Hydrogen gas and metal P oxide No changes
Which of the following is in ascending order for the reactivity of elements towards oxygen?
A Carbon, P, hydrogen, Q
B Q, hydrogen, P, carbon
C Hydrogen, P, carbon, Q
D Hydrogen, Q, carbon, P
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36 Diagram shows an experiment carried out for iron(II) sulphate.
Which of the following is solution X?
A Potassium chloride solution
B Potassium bromide solution
C Sodium hydroxide solution
D Acidified potassium manganate(VII) solution
37 The diagram shows the energy profile for the formation of T from R and S.
What is the activation energy for the reaction?
A y kJ mol-1
B (x + y) kJ mol-1
C x kJ mol-1
D (x-y) kJ mol-1
x kJ mol-1
R + S
T y kJ mol-1
Energy
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38 The diagram shows the electron arrangement in an atom of elements P and Q.
What is the formula and type of bond for the compound formed when P reacts with Q? Formula Bond A PQ2 Ionic
B PQ4 Ionic
C PQ Covalent
D PQ4 Covalent
39 The equation represents the redox reaction between ammonia and copper(II) oxide. 2 NH3 + 3CuO ? N2 + 3 Cu + 3H2O
Which of the following is true about the reaction?
A Ammonia is an oxidizing agent
B Nitrogen is a reducing agent
C Oxidation number of copper decreases from +2 to 0
D Oxidation number of hydrogen increases from -1 to +1
40 The table shows two experiments carried out to investigate the reaction between
calcium nitrate and sodium carbonate solution.
Calcium nitrate solution
Sodium carbonate solution Experiment
Volume (cm3)
Concentration (mol dm-3)
Volume (cm3)
Concentration, (mol dm-3)
Decrease in temperature,0 C
I 100.0 1.0 100.0 1.0 6.0
II 50.0 2.0 50.0 2.0 X What is the value of X?
A 1.5 0 C
B 3.0 0 C
C 6.0 0 C
D 12.0 0 C
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R
2 _
41 The diagram shows an electron arrangement of R2- ion.
How many protons and electrons does an atom of R contain?
42 Nitrogen exists as diatoms.
What is the mass of one nitrogen molecule? Given that the relative atomic mass of N = 14; Avogadro constant = 6 x 1023 mol-1
A 2.1 x 10-23 g
B 2.3 x 10-23 g
C 4.7 x 10-23 g
D 28 x 10-23 g
Protons Electrons
A 8 6
B 8 10
C 10 10
D 8 8
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43 An experiment is carried out to study the effect of concentration on the rate of reaction between sodium thiosulphate and hydrochloric acid. Graph of the concentration of sodium thiosulphate against 1/time is as shown.
Based on the graph, what is the value of t if the experiment is repeated using sodium thiosulphate solution 0.025 mol dm-3.
A 32.3 s
B 50.0 s
C 0.020 s
D 0.031s
44 What is the volume of distilled water required to be added to 25.0 cm3 of
0.5 mol dm-3 sulphuric acid in order to produce a solution of 0.1 mol dm -3 ?
A 75.0 cm3
B 100.0 cm3
C 125.0 cm3
D 150.0 cm3
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45 The following shows the energy level diagram of a reaction. Energy
Zn + Cu2+ ∆H = - 190 kJ/mol Zn2+ + Cu
Which of the following statements are true about the reaction?
I Zinc is oxidized
II The reaction is exothermic
III The temperature decreases during the reaction
IV 95 kJ of heat is released when 0.5 mole of copper is displaced
A I and III only
B II and IV only
C III and IV only
D I, II and IV only
46 4.60 g of sodium is burnt in excess chlorine gas. The equation for the reaction is as
follows:
2Na (p) + Cl2 (g) à 2NaCl (p)
The product is dissolved in water to produce 250.0 cm3 of solution. What is the molarity of the solution? Given that the relative atomic mass of Na = 23.
A 0.05 mol dm -3
B 0.20 mol dm -3
C 0.40 mol dm -3
D 0.80 mol dm -3
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47 The table shows the voltmeter readings when a pair of different metal electrodes are dipped into the copper(II) nitrate solution.
Metal electrode
Positive terminal Negative terminal Voltmeter reading (V)
P S 2.8
P Q 0.8
R S 1.2
Q R Y What is the value of Y? A 0.8
B 1.0
C 1.6
D 2.0
48 Copper(II) carbonate decomposes when heated strongly as represented by the
following equation.
CuCO3 à CuO + CO2
What is the volume of carbon dioxide gas released when 0.62g copper(II) carbonate is heated? Given that the relative atomic mass of Cu = 64, C = 12, O = 16 and 1 mol of gas occupies 24 dm3 at room temperature and pressure. A 120 cm3
B 240 cm3
C 480 cm3
D 640 cm3
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49 The diagram shows the set-up of apparatus for the electrolysis of sodium chloride
solution 1.0 mol dm -3.
Which of the following observations are true about the electrolytic cell? I Shiny grey solid deposited at the cathode
II Colourless gas is collected in the test tube at the cathode
III A greenish-yellow gas is collected in the test tube at the anode
IV A damp blue litmus paper decolourised when put into the test tube at the
anode
A I and II only
B I and III only
C I, III and IV only
D II, III and IV only
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50 Information on methane and butane is shown in the following table.
Fuel Relative
molecular mass
Chemical equation Heat of Combustion
Methane 16 CH4 + 2O 2 à CO2 + 2H 2O -890 kJ mol-1
Butane 58 C4H10 + 13/2 O2 à 4CO2 + 5H2O -2882 kJ mol-1
Based on the information shown in the table, the conclusions are I butane is more combustible than methane
II combustion of 1 g of methane produces more heat than 1 g of butane
III energy content of butane is higher than methane
IV combustion of 1 mole of butane produces more carbon dioxide than 1 mole of
methane
A I and III only
B I, II and IV only
C II, III and IV only
D I, II, III and IV
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NAMA: …………………………………….
ANGKA GILIRAN: ……………………….
PEPERIKSAAN PERCUBAAN SPM 2006 MAKTAB RENDAH SAINS MARA
KIMIA
Kertas 2
Dua jam tiga puluh minit JANGAN BUKA KERTAS SOALAN INI
SEHINGGA DIBERITAHU
1. Tuliskan nama dan angka giliran anda pada ruang yang disediakan. 2. Kertas soalan ini adalah dalam dwibahasa.
3. Soalan di halaman kiri adalah dalam bahasa Mela yu. Soalan di halaman kanan adalah dalam bahasa Inggeris. 4. Calon dibenarkan menjawab keseluruhan atau sebahagian soalan sama ada dalam bahasa Melayu atau bahasa Inggeris. 5. Calon dikehendaki membaca maklumat di halaman 2 dan halaman 3.
Kod Pemeriksa
Bahagian
Soalan
Markah Penuh
Markah
Diperoleh 1 09 2 09 3 10 4 10 5 11
A
6 11 1 20
B 2 20 3 20
C 4 20 Jumlah
Kertas soalan ini mengandungi 51 halaman bercetak
4541/2 Kimia Kertas 2 Sept 2006 2 ½ jam
4541/2 © 2006 Hak Cipta
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SULIT 4541/2
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MAKLUMAT UNTUK CALON
1. Kertas soalan ini mengandungi tiga bahagian : Bahagian A, Bahagian B dan Bahagian C.
2. Jawab semua soalan dalam Bahagian A. Tuliskan jawapan bagi Bahagian A dalam
ruang yang disediakan dalam kertas soalan . 3. Jawap satu soalan daripada Bahagian B dan satu soalan daripada Bahagian C.
Tuliskan jawapan bagi Bahagian B dan Bahagian C pada halaman bergaris di bahagian akhir kertas soalan ini. Jawab Bahagian B dan Bahagian C dengan terperinci. Anda boleh menggunakan persamaan, gambar rajah, jadual, graf dan cara lain yang sesuai untuk menjelaskan 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 soala n tidak dilukiskan mengikut skala kecuali dinyatakan.
7. Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan
dalam kurungan. 8. Masa yang dicadangkan untuk menjawab Bahagian A ialah 90 minit, Bahagian B
ialah 30 minit dan Bahagian C ialah 30 minit.
9. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogramkan. 10. Serahkan semua kertas jawapan anda di akhir peperiksaan.
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Bahagian A
[60 markah]
Jawab semua soalan dalam bahagian ini. Masa yang dicadangkan untuk menjawab bahagian ini ialah 90 minit.
1 Rajah 1 menunjukkan simbol atom bagi unsur karbon dan oksigen.
RAJAH 1 Berdasarkan Rajah 1, jawab soalan-soalan berikut:
(a ) Apakah yang diwakili oleh :
(i) nombor 12 bagi atom unsur C? ..................................................................................................................
[1 markah]
(ii) nombor 8 bagi atom unsur O ?
.................................................................................................................. [1 markah]
(b ) (i) Apakah yang dimaksudkan dengan isotop?
..................................................................................................................
..................................................................................................................
[1 markah]
(ii) Nyatakan atom-atom yang merupakan isotop – isotop bagi unsur yang sama .
..................................................................................................................
[1 markah]
(iii) Tuliskan simbol atom bagi isotop lain untuk unsur yang dinyatakan di (b)(ii).
..................................................................................................................
[1 markah]
Untuk Kegunaan Pemeriksa
1(b)(iii)
1(a)(i)
1(a)(ii)
1(b)(i)
1(b)(ii)
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(c) (i) Berapakah bilangan elektron bagi atom ?
................................................................................................................. [1 markah ]
(ii) Tuliskan susunan elektron bagi atom di (c)(i). ……….…………………………………………………………………. [1 markah ]
(d ) Karbon dan oksigen terletak dalam kala yang sama dalam Jadual Berkala. Nyatakan kala tersebut dan jelaskan jawapan anda. ............................................................................................................................. .............................................................................................................................
[2 markah ]
Untuk Kegunaan Pemeriksa
1(c)(i) 1(c)(ii)
1(d)
JUMLAH
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2 Rajah 2 menunjukkan susunan radas bagi satu eksperimen untuk menentukan formula
empirik bagi satu oksida kuprum.
RAJAH 2
Berikut adalah data yang diperolehi daripada eksperimen tersebut:
Jisim kuprum oksida = 2.00 g Jisim logam kuprum = 1.60 g
(a ) Apakah yang dimaksudkan dengan formula empirik?
………………………………………………………………..…………...……. [1 markah]
(b ) Namakan satu bahan yang boleh digunakan untuk mengeringkan gas hidrogen. ……………………………………………………………………………….….
[1 markah]
(c) Mengapakah gas hidrogen kering perlu dilalukan ke dalam tabung pembakaran selama beberapa minit sebelum pemanasan dimulakan?
.....……………………………………………………………………………….
[1 markah]
Untuk Kegunaan Pemeriksa
2(a)
2(b)
2(c)
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(d ) Bagaimanakah anda boleh memas tikan tindak balas ini telah lengkap?
....……………………………………………………………………………….
[1 markah ] (e) Berdasarkan keputusan di atas,
(i) hitungkan bilangan mol atom kuprum dan bilangan mol atom oksigen
yang bertindak balas. Diberi jisim atom relatif bagi O = 16 dan Cu = 64.
[2 markah ]
(ii) Tentukan nisbah teringkas bilangan mol atom kuprum kepada bilangan mol atom oksigen.
[1 markah ]
(iii) Apakah formula empirik bagi oksida kuprum ini?
.................................................................................................................. [1 markah ]
(f) Mengapakah formula empirik oksida magnesium tidak boleh ditentukan
dengan kaedah di atas? ..………………………………………………………………………………….
[1 markah ]
2(d)
2(e)(i)
2(e)(ii)
2(e)(iii)
2(f)
JUMLAH
Untuk Kegunaan Pemeriksa
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3 Rajah 3 menunjukkan susunan radas bagi eksperimen penentuan haba peneutralan. 25.0 cm3 larutan asid nitrik 2.0 mol dm-3 ditindakbalaskan dengan 25.0 cm3 larutan kalium hidroksida 2.0 mol dm-3.
Sebelum tindak balas
Selepas tindak balas
Suhu maksimum = 43.5 oC
RAJAH 3
(a ) Cadangkan satu langkah berjaga-jaga yang perlu diambil semasa eksperimen ini dijalankan.
..............................................................................................................................
[1 markah ]
(b ) Nyatakan jenis tindak balas yang berlaku dari segi perubahan haba. ..............................................................................................................................
[1 markah ]
Larutan asid nitrik Suhu awal = 30.0 oC
Larutan kalium hidroksida Suhu awal = 30.0 oC
Termometer
Cawan polistirena
Termometer
Campuran larutan
Untuk Kegunaan Pemeriksa
3(a)
3(b)
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(c) Tuliskan persamaan kimia bagi tindak balas yang berlaku. .............................................................................................................................. [1 markah ]
(d ) Hitungkan
(i) bilangan mol asid nitrik dan bilangan mol ka lium hidroksida
[1 markah ]
(ii) perubahan haba dalam eksperimen itu. Diberi muatan haba tentu larutan ialah 4.2 Jg-1 oC -1 dan ketumpatan larutan ialah 1 g cm-3
[1 markah ]
(iii) haba peneutralan bagi tindak balas itu. ∆H = _________________
[ 2 markah ]
Untuk Kegunaan Pemeriksa
3(c)
3(d)(i)
3(d)(ii)
3(d)(iii)
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(e) Lukiskan gambar rajah aras tenaga bagi tindak balas itu. [2 markah ]
(f) Ramalkan nilai haba peneutralan sekiranya asid nitrik digantikan dengan asid
etanoik untuk bertindak balas dengan kalium hidroksida.
.............................................................................................................................. [1 markah ]
Untuk Kegunaan Pemeriksa
3(e)
3(f)
JUMLAH
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4 Jadual 4 menunjukkan data yang diperoleh oleh seorang pelajar daripada satu
eksperimen untuk mengkaji kadar penguraian hidrogen peroksida menggunakan mangkin mangan(IV) oksida.
Masa (s) 0 30 60 90 120 150 180 210 240 270
Isipadu gas oksigen (cm3)
0.00 18.00 31.00 39.00 43.00 46.00 48.00 49.00 50.00 50.00
JADUAL 4
(a ) Lukiskan gamba r rajah berlabel susunan radas bagi eksperimen itu. [2 markah ]
(b ) Tuliskan persamaan kimia bagi penguraian hidrogen peroksida. .............................................................................................................................. [1 markah ]
(c) 2.0 g serbuk mangan(IV) oksida telah digunakan pada awal eksperimen dan
didapati jisim mangan(IV) oksida tidak berubah pada akhir tindak balas. Terangkan mengapa. .............................................................................................................................. .............................................................................................................................. [1 markah ]
(d ) Mengapakah mangan(IV) oksida digunakan dalam bentuk serbuk? ..............................................................................................................................
[1 markah ]
Untuk Kegunaan Pemeriksa
4(a)
4(b)
4(c)
4(d)
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(e) (i) Gunakan data dalam Jadual 4 untuk melukis graf isipadu gas oksigen melawan masa pada kertas graf di bawah.
[ 3 markah ]
Untuk Kegunaan Pemeriksa
4(e)(i)
Graf isipadu gas oksigen melawan masa
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(ii) Berdasarkan graf di (e)(i), hitungkan kadar tindak balas pada masa 90 saat dan tunjukkan tangen pada graf di (e)(i).
[ 2 markah ]
4(e)(ii)
Untuk Kegunaan Pemeriksa
JUMLAH
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5 Rajah 5 menunjukkan susunan radas tindak balas melibatkan pemindahan elektron pada suatu jarak antara larutan kalium iodida dengan air bromin.
RAJAH 5
Merujuk kepada tindak balas di atas, jawab soalan berikut:
(a ) Nyatakan warna air bromin.
..............................................................................................................................
[1 markah ]
(b ) Namakan bahan yang dioksidakan dalam tindak balas. ..............................................................................................................................
[1 markah ]
(c) Nyatakan arah pengaliran elektron bagi tindak balas ini. .............................................................................................................................. [1 markah ]
(d ) Nyatakan perubahan nombor pengoksidaan bagi
(i) iodin
.................................................................................................................
(ii) bromin
................................................................................................................. [2 markah ]
Untuk Kegunaan Pemeriksa
5(a)
5(c)
5(b)
5(d)
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(e) Tuliskan persamaan ion keseluruhan bagi tindak balas ini.
.............................................................................................................................. [1 markah ]
(f) Satu larutan berwarna perang terbentuk di sekitar elektrod P. (i) Terangkan dengan ringkas bagaimana anda menentusahkan larutan itu.
.................................................................................................................. .................................................................................................................. ..................................................................................................................
[2 markah ]
(ii) Terangkan bagaimana larutan tersebut dihasilkan.
.................................................................................................................. ..................................................................................................................
.................................................................................................................. [2 markah ]
(g ) Apakah yang akan diperhatikan pada bacaan galvanometer jika air bromin pada bahagian Q digantikan dengan air klorin?
..............................................................................................................................
[1 markah ]
Untuk Kegunaan
Pemeriksa
5(e)
5(g)
5(f)(ii)
5(f)(i)
JUMLAH
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6 Rajah 6 menunjukkan carta alir bagi penukaran propena kepada polipropena, propana
dan propanol.
RAJAH 6
(a ) Namakan siri homolog bagi propena.
............................................................................................................................. [1 markah ]
(b ) Lengkapkan persamaan kimia untuk Proses I dengan melukis formula struktur bagi polipropena
[1 markah ]
(c) Tuliskan persamaan kimia bagi mewakili pr oses II. .............................................................................................................................. [1 markah ]
(d ) Propena dan propana terbakar dalam oksigen.
(i) Tuliskan persamaan kimia bagi salah satu tindak balas pembakaran ini dalam oksigen berlebihan. ..................................................................................................................
[1 markah ]
Polipropena
Propana Propena Propanol
Proses I
Proses II Proses III
Untuk Kegunaan Pemeriksa
6(a)
6(b)
6(c)
6(d)(i)
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(ii) Bandingkan kejelagaan pembakaran propena dan propana. Terangkan jawapan anda. Diberi jisim molekul relatif: propena = 42 dan propana = 44.
.................................................................................................................. .................................................................................................................. ..................................................................................................................
[3 markah ]
(e) (i) Terangkan bagaimana anda menjalankan Proses III.
.................................................................................................................. .................................................................................................................. ..................................................................................................................
[3 markah ]
(ii) Tuliskan persamaan kimia bagi Proses III.
..................................................................................................................
[1 markah ]
Untuk Kegunaan Pemeriksa
6(d)(ii)
6(e)(ii)
6(e)(i)
JUMLAH
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Bahagian B
[20 markah ]
Jawab mana-mana satu soalan .
Masa yang dicadangkan untuk menjawab bahagian ini ialah 30 minit 7 (a ) Unsur-unsur dalam kumpulan yang sama dalam Jadual Berkala Unsur
mempunyai kereaktifan yang berbeza.
Terangkan mengapa dua logam ini mempunyai kereaktifan yang berbeza. [4 markah ]
(b ) Rajah 7.1 menunjukkan susunan radas satu eksperimen yang dijalankan untuk
mengkaji perubahan kimia yang berlaku ke atas logam kalium.
Logam kalium dibakar dalam balang gas berisi
oksigen
Hasil tindak balas dicampur air
Larutan X terhasil
RAJAH 7.1
(i) Persamaan kimia di bawah menunjukkan tindak balas antara logam kalium dengan gas oksigen. Diberi, jisim atom relatif K = 39, O = 16. Hitungkan jisim kalium oksida yang terhasil jika 3.9 g kalium bertindak balas dengan gas oksigen berlebihan pada keadaan bilik.
[4 markah ]
(ii) Namakan larutan X dan tuliskan persamaan kimia bagi pembentukannya.
Tindak balas kalium dengan oksigen lebih cergas daripada tindak balas litium dengan oksigen
4K + O 2 2K2O
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(c) (i) Jadual 7.2 menunjukkan keputusan ujian untuk membezakan
kekonduksian dua sebatian yang berlainan.
Sebatian Kekonduksian Elektrik
Tetraklorometana ( CCl4) Tidak mengalirkan arus elektrik
Larutan natrium klorida( NaCl) Boleh mengalirkan arus elektrik JADUAL 7.2
Terangkan mengapa terdapat perbezaan kekonduksian elektrik itu.
[4 markah ]
(ii) Jadual 7.3 menunjukkan keputusan proses elektrolisis ke atas dua larutan yang berlainan menggunakan elektrod karbon.
JADUAL 7.3
Terangkan mengapa terdapat perbezaan hasil di katod. [6 markah ]
Larutan Hasil di katod Hasil di anod
Natrium klorida 1.0 mol dm -3 Hidrogen Klorin
Kuprum(II) klorida 1.0 mol dm -3 Kuprum Klorin
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8 (a ) Terangkan fungsi steroid anabolik dan nyatakan tiga kesan sampingan yang
mungkin timbul akibat penyalahgunaan bahan ini. [4 markah]
(b ) Rajah 8.1 menunjukkan penghasilan baja Z dalam makmal dari tindak balas
antara gas ammonia dan asid sulfurik cair.
RAJAH 8.1
(i) Namakan baja Z.
[1 markah]
(ii) Tuliskan persamaan kimia yang seimbang bagi penghasilan baja Z. [2 markah]
(iii) Hitungkan isipadu gas ammonia yang bertindak balas lengkap dengan
asid sulfurik jika 13.2 g baja Z dihasilkan, Diberi jisim molar Z = 132 g mol -1 dan isipadu molar gas ialah 24.0 dm3 mol -1 pada suhu dan tekanan bilik.
[3 markah]
Steroid anabolik sering digunakan oleh para atlit untuk meningkatkan prestasi
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(c) Jadual 8.2 menunjukkan dua eksperimen yang telah dijalankan ke atas lateks.
Eksperimen Susunan radas Pemerhatian
I
Pepejal putih terhasil
II
Tiada perubahan
JADUAL 8.2 Huraikan dengan ringkas tentang perbezaan pemerhatian itu.
[5 markah ] (d) Rajah 8.3 menunjukkan penggunaan beberapa polimer sintetik dalam
kehidupan harian.
RAJAH 8.3
Terangkan punca dan kesan pencemaran penggunaan polimer sintetik secara berlebihan.
[5 markah ]
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[5 marks] Bahagian C
[ 20 markah ]
Jawab mana-mana satu soalan . Masa yang dicadangkan untuk menjawab bahagian ini ialah 30 minit
9
(a ) Terangkan proses kimia yang berlaku dalam alat itu dan tuliskan persamaan bagi tindak balas yang terlibat.
[4 markah ]
(b ) Rajah 9 menunjukkan dua persamaan bagi tindak balas yang berbeza.
RAJAH 9
(i) Namakan sebatian R dan Q. (ii) Banding dan bezakan tindak balas I dan tindak balas II.
[ 6 markah ]
(c) Persamaan berikut menunjukkan pembentukan ester hasil daripada tindak balas antara asid etanoik glasial dengan suatu alkohol.
Huraikan satu eksperimen bagaimana anda menyediakan suatu ester yang
dinamakan . Nyatakan bagaimana anda mengesan ester yang terhasil dan tuliskan
persamaan kimia bagi tindak balas itu. [10 markah ]
Kandungan alkohol dalam udara hembusan pemandu yang mabuk boleh dikesan menggunakan sejenis alat pengesan yang
mengandungi kalium dikromat(VI)
R + Br2
Q + Br2 + HBr
Tindak balas I
Tindak balas II
R + Br2
Q + Br2 + HBr
ALKOHOL + ASID ETANOIK GLASIAL à ESTER + AIR
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10 (a) Cuka merupakan larutan asid etanoik cair. Rajah 10 menunjukkan tindak balas apabila sebiji telur ayam dimasukkan ke
dalam cuka.
RAJAH 10
Terangkan pemerhatian ini dan sertakan persamaan bagi tindak balas yang terlibat. [4 markah ] (b) Label pada satu botol reagen yang mengandungi larutan X telah tertanggal. Larutan X disyaki larutan plumbum(II) nitrat atau kalsium nitrat.
Huraikan ujian kimia yang sesuai untuk menentusahkan ion-ion yang terdapat dalam larutan X itu. [6 markah ] (c) Anda dikehendaki menyediakan garam zink sulfat yang kering. Bahan kimia yang dibekalkan ialah:
• larutan zink klorida • asid sulfurik cair • larutan natrium karbonat
Huraikan satu eksperimen makmal bagaimana anda dapat menyediakan garam tersebut. Dalam huraian anda sertakan persamaan yang terlibat. [10 markah ]
KERTAS SOALAN TAMAT
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RUANG JAWAPAN / SPACE FOR YOUR ANSWER
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RUANG JAWAPAN / SPACE FOR YOUR ANSWER
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RUANG JAWAPAN / SPACE FOR YOUR ANSWER
BAHAGIAN / SECTION: ......................... NO. SOALAN / QUESTION NO.: ............ ___________________________________________________________________________
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[Lihat sebelah
Nama : …….……………………………………...…….… No Giliran : …………….. Kelas : ………………….. SULIT Kimia Kertas 3 September 2006 1½ jam
PEPERIKSAAN PERCUBAAN SPM 2006 MAKTAB RENDAH SAINS MARA
KIMIA
Kertas 3 Satu jam tiga puluh minit
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU
1. Tuliskan nama, angka giliran dan kelas
anda pada ruang yang disediakan. 2. Kertas soalan ini adalah dalam dwibahasa 3. Soalan di halaman kiri adalah dalam
bahasa Melayu. Soalan di halaman kanan adalah yang sepadan dalam bahasa Inggeris.
4. Calon dibenarkan menjawab keseluruhan
atau sebahagian soalan sama ada dalam bahasa Melayu atau bahasa Inggeris.
5. Calon dikehendaki membaca maklumat di
halaman 2 dan halaman 3.
Kod
Pemeriksa
Soalan Markah Penuh
Markah Diperoleh
1 15
2 18
3 17
Jumlah 50
Kertas soalan ini mempunyai 20 halaman bercetak. INFORMATION FOR CANDIDATES SULIT 4541/3 © 2006 Hak Cipta MARA
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INFORMATION FOR CANDIDATES 1. This question paper consists of three questions. Answer all questions. 2. Write your answers for Question 1 and Question 2 in the spaces provided in the
question paper. 3. Write your answers for Question 3 on the lined pages at the end of the question
paper in detail. You may use equations, diagrams, tables, graphs and other suitable methods to explain your answers.
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 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 complete Question 1 and Question 2 is 45 minutes and Question 3 is 45 minutes. 9. You may use a non-programmable scientific calculator. 10. Hand in all your answer sheets at the end of the examination.
Marks awarded:
Score Description
3 Excellent: The best response
2 Satisfactory: An average response
1 Weak : An inaccurate response
0 No response or wrong response
SULIT 4541/3
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Answer all questions. The time suggested to answer Question 1 and Question 2 is 45 minutes.
1 A student has carried out an experiment to compare the products for electrolysis of
aqueous copper(II) chloride of different concentrations. Figure shows the product at each electrode after the electrolysis has been carried out
for 20 minutes.
Cell I
Cell II
(a) Complete the following table by stating the observation at the anodes and its corresponding inferences.
Cell Observation at the anode Inference
I
……………………………………… ………………………………………
……………………………………… ………………………………………
II
……………………………………… ………………………………………
……………………………………… ………………………………………
[6 marks]
For Examiner’s
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1(a)
1(a)
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(b) Identify the variables involved in this experiment.
Manipulated variable: ………………………………………………………………………………… Responding variable: ………………………………………………………………………………… Controlled variable: …………………………………………………………………………………
[3 marks]
(c) State the hypothesis for this experiment.
………………………………………………………………………………… ………………………………………………………………………………… …………………………………………………………………………………
[3 marks]
(d) What will be observed at the anode of Cell II if the exper iment is carried out for three hours?
………………………………………………………………………………… …………………………………………………………………………………
[3 marks]
1(b)
1(c)
1(d )
For Examiner’s
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2 A student carried out an experiment to determine the concentration of sodium hydroxide. 20.00 cm3 of aqueous sodium hydroxide and a few drops of phenolphthalein is titrated using hydrochloric acid 0.50 mol dm-3 from a burette.
Titration is stopped when the solution in the conical flask changes colour from pink to colourless.
Experiment was repeated three times. Figure shows the readings of the burette during titration.
(a) Record the burette readings in the spaces provided. [3 marks]
Experiment 1 Experiment 2 Experiment 3
Initial readings
of burette
……….. cm3
……….. cm3
……….. cm3
End point readings
……….. cm3
……….. cm3
……….. cm3 2(a)
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(b) Construct a table and record the initial reading, end point reading and volume of hydrochloric acid used.
[3 marks]
(c) What is meant by the end point in the above experiment?
………………………………………………………………………………… …………………………………………………………………………………
[3 marks]
(d) The chemical equation for the reaction is
NaOH + HCl ? NaCl + H2O
(i) What is the average volume of hydrochloric acid used? (ii) Calculate the concentration of sodium hydroxide used in the
experiment.
[3 marks]
2(c)
2(d )
2(b)
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(e) The experiment is repeated using aqueous barium hydroxide, Ba(OH)2. Predict the volume of hydrochloric acid required to reach the end point.
………………………………………………………………………………… …………………………………………………………………………………
[3 marks]
(f) The table shows the concentrations and the pH values of four different acids. Based on the information, classify the acid into strong acid and weak acid .
Acid Concentration / mol dm-3 pH Nitric acid 0.10 1.1
Oxalic acid, 0.05 3.2
Sulphuric acid 0.05 1.0 Methanoic acid 0.10 3.5
[3 marks]
2(e)
For Examiner’s
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2(f)
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3
Refering to the situation above, plan a laboratory exper iment to compare the elasticity of prepared vulcanized and unvulcanized rubber.
Your planning must include the following items: (i) Statement of the problem (ii) All the variables (iii) Hypothesis (iv) Lists of substances and apparatus (v) Procedure (vi) Tabulation of data
[17 marks]
END OF QUESTION PAPER
A heavy duty glove which is made of vulcanized rubber is more
durable than a surgical glove which is made of unvulcanized rubber.
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Pemeriksa / For
Examiner’s Use
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Pemeriksa / For
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