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 http://cikguadura.wordpress.com/
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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
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.
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
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
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?
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?
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 ?
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.
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
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.
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.
(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. ............................................................................................................................. .............................................................................................................................
(b ) Nyatakan jenis tindak balas yang berlaku dari segi perubahan haba. ..............................................................................................................................
(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 = _________________
(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? ..............................................................................................................................
(b ) Namakan bahan yang dioksidakan dalam tindak balas. ..............................................................................................................................
[1 markah ]
(c) Nyatakan arah pengaliran elektron bagi tindak balas ini. .............................................................................................................................. [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. ..................................................................................................................
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
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
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:
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
4541/3 SULIT
- 5 -
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
Use
1(a)
1(a)
SULIT 4541/3
4541/3 SULIT
- 7 -
(b) Identify the variables involved in this experiment.
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)
For Examiner’s
Use
SULIT 4541/3
4541/3 SULIT
- 11 -
(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?
(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 .
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.