PAPER 1 - CHEMISTRY TRIAL EXAM (2018)

SULIT

SEKOLAH MENENGAH KEBANGSAAN SULTAN YUSSUF BATU GAJAH, PERAK

PEPERIKSAAN PERCUBAAN SPM 2018

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CHEMISTRY Kertas 1 September 1 ¼ jam

Satu jam lima belas minit

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU 1.

Kertas soalan ini adalah dalam dwibahasa.

2.

Soalan dalam bahasa Inggeris mendahului soalan yang sepadan dalam bahasa Melayu.

3.

Calon dikehendaki membaca maklumat di halaman belakang kertas soalan ini.

Kertas soalan ini mengandungi 23 halaman bercetak

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1.

B

Air Udara

C

Water Air

D

Gold Emas

10

B

13

C

14

D

27

The average mass of magnesium atom is 24 times greater than the mass of carbon-12 atom. What is the relative atomic mass of magnesium?

Purata jisim satu atom magnesium adalah 24 kali lebih besar daripada jisim satu atom karbon-12. Apakah jisim atom relatif bagi magnesium?

A

4.

Carbon Karbon

Element R has a nucleon number of 27 and forms R3+ ion with an electron arrangement of 2.8. What is the number of neutrons of atom R? Unsur R mempunyai nombor nukleon 27 dan membentuk ion R3+ dengan susunan elektron 2.8. Apakah bilangan neutron bagi atom R? A

3.

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Which substance is a compound?

Bahan manakah merupakan suatu sebatian?

A

2.

2

2

B

12

C

24

D

48

Henry Moseley updated the Periodic Table of Elements by arranging the elements in horizontal rows. What is the arrangement based on?

Henry Moseley mengemaskinikan Jadual Berkala Unsur dengan menyusunkan unsurunsur dalam barisan mendatar. Apakah asas susunan itu?

A

proton number nombor proton

B

C

number of neutrons bilangan neutron

D number of electrons bilangan elektron

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nucleon number nombor nukleon

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B C D

7.

8.

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Which characteristic is similar for all elements in Group 17 of the Periodic Table?

Ciri manakah yang sama bagi semua unsur Kumpulan 17 dalam Jadual Berkala?

A

6.

3

Form coloured compounds Membentuk sebatian berwarna High melting and boiling points Takat lebur dan takat didih yang tinggi Exist as gas at room temperature Wujud sebagai gas pada suhu bilik Dissolve in water to form acidic solution Larut dalam air untuk membentuk larutan berasid

Which substance is an ionic compound?

Bahan manakah sebatian ionik?

A

ethanol, C2H5OH etanol, C2H5OH

B

sulphur dioxide, SO2 sulfur dioksida, SO2

C

tetrachloromethane, CCl4 tetraklorometana, CCl4

D magnesium chloride, MgCl2 magnesium klorida, MgCl2

Substance Z has a melting point of -100°C and a boiling point of -35°C. What is substance Z? Bahan Z mempunyai takat lebur -100°C dan takat didih -35°C. Apakah bahan Z? A

Sulphur Sulfur

B

Alcohol Alkohol

C

Carbon dioxide Karbon dioksida

D Sodium hydroxide Natrium hidroksida

Which particles are produced when an electrolyte dissolves in water?

Zarah manakah yang terhasil apabila elektrolit melarut dalam air?

A

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ions ion

B

atoms atom

C

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electrons elektron

D

molecules molekul

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B C D

11.

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Which statement is correct about acid?

Pernyataan manakah benar tentang asid?

A

10.

4

Acid solution conducts electricity Larutan asid mengkonduksikan arus elektrik Strong acid ionizes partially in water Asid kuat mengion separa dalam air Weak acid produces high concentration of hydrogen ions Asid lemah menghasilkan kepekatan ion hidrogen yang tinggi The presence of water enables acid to produce hydroxide ions Kehadiran air membolehkan asid menghasilkan ion hidroksida

Which of the following is a soluble salt?

Antara berikut, yang manakah merupakan garam terlarutkan?

A

Iron(II) chloride Ferum(II) klorida

B

Silver chloride Argentum klorida

C

Calcium sulphate Kalsium sulfat

D

Lead(II) sulphate Plumbum(II) sulfat

Which equations represent the double decomposition reactions that form precipitate?

Persamaan manakah mewakili tindak balas penguraian ganda dua yang menghasilkan mendakan?

I

CuSO4 + Na2CO3 → CuCO3 + Na2SO4

II

CuSO4 + Mg(NO3)2 → Cu(NO3)2 + MgSO4

III

AgNO3 + NaCl → AgCl + NaNO3

IV

ZnCl2 + Na2SO4 → ZnSO4 + 2NaCl

A

I and II I dan II

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B

I and III I dan III

C

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II and IV II dan IV

D

III and IV III dan IV

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13.

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Sulphuric acid, H2SO4, is produced in industry through Contact Process. What is the catalyst used in Contact Process?

Asid sulfurik, H2SO4, dihasilkan dalam industri melalui Proses Sentuh. Apakah mangkin yang digunakan dalam Proses Sentuh?

A

Iron Besi

B

C

Vanadium(V) oxide Vanadium(V) oksida

D Manganese(IV) oxide Mangan(IV) oksida

Platinum Platinum

Which reaction has the lowest rate of reaction?

Tindak balas manakah yang mempunyai kadar tindak balas paling rendah?

A B C D

14.

5

Rusting of water pipes Pengaratan paip air Photosynthesis in green plants Fotosintesis dalam tumbuhan hijau Burning of a small piece of paper Pembakaran secebis kertas Formation of stalactites and stalagmites in a cave Pembentukan stalaktit dan stalagmite dalam gua

Which factor does not affect the rate of reaction?

Faktor manakah yang tidak mempengaruhi kadar tindak balas?

A B C D

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Volume of reactant Isipadu bahan tindak balas Size of solid reactant Saiz bahan tindak balas yang berkeadaan pepejal Temperature of reactant Suhu bahan tindak balas Concentration of reactant Kepekatan bahan tindak balas

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17.

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What are the products that formed when propane is burnt in excess oxygen?

Apakah bahan yang terhasil apabila propana terbakar dalam oksigen berlebihan?

I

Water Air

II

III

Carbon dioxide Kabon dioksida

IV Carbon monoxide Karbon moksida

A

16.

6

I and II I dan II

B

I and III I dan III

C

Carbon Karbon

II and IV II dan IV

D

III and IV III dan IV

A pupil wants to produce a rubber strip that is harder and resistant to heat. He dips the rubber strip in a beaker containing methylbenzene and substance Q. What is substance Q? Seorang pelajar ingin menghasilkan kepingan getah yang lebih keras dan tahan haba.

Dia mencelupkan kepingan getah itu ke dalam bikar mengandungi metilbenzena dan bahan Q. Apakah bahan Q? A

Ethanoic acid Asid etanoik

B

Hydrogen chloride Hidrogen klorida

C

Disulphur dichloride Disulfur diklorida

D Potassium hydroxide Kalium hidroksida

Which of the following is an oxidizing agent?

Antara berikut, yang manakah agen pengoksidaan?

A

Chlorine Klorin

B

C

Hydrogen sulphide Hidrogen sulfida

D Potassium bromide Kalium bromida

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Sulphur dioxide Sulfur dioksida

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19.

7

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Hot packs contain chemicals that react to release heat. Which substance is used in hot packs?

Pek panas mengandungi bahan kimia yang bertindak balas untuk membebaskan haba.

Bahan manakah yang digunakan dalam pek panas?

A

Silver chloride Argentum klorida

B

Calcium chloride Kalsium klorida

C

Potassium nitrate Kalium nitrat

D Ammonium nitrate Ammonium nitrat

The diagram below is an energy level diagram.

Rajah di bawah ialah gambar rajah aras tenaga.

Energy Tenaga Products Hasil tindak balas ∆H Reactants Bahan tindak balas Which of the following can be deduced from the diagram?

Antara berikut, yang manakah boleh disimpulkan daripada rajah?

A B C D

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Heat is absorbed Haba diserap The products are more stable than the reactants Hasil tindak balas adalah lebih stabil daripada bahan tindak balas The surrounding temperature increases during the reaction Suhu persekitaran meningkat semasa tindak balas The total energy of the reactants is more than the total energy of the products Jumlah tenaga bahan tindak balas lebih tinggi daripada jumlah tenaga hasil tindak balas

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What is the main source in the production of detergent?

Apakah sumber utama dalam penghasilan detergen?

A

21.

8

Palm oil Minyak sawit

B

Animal fat Lemak haiwan

C

Ammonia Ammonia

D

Petroleum Petroleum

The diagram below shows a graph to study the effect of total surface area on the rate of reaction.

Rajah di bawah menunjukkan graf bagi mengkaji jumlah luas permukaan ke atas kadar tindak balas.

What is represented by gradient tangent X? Apakah yang diwakili oleh kecerunan tangen X? A B C D

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Overall average rate of reaction Kadar tindak balas purata keseluruhan Rate of reaction at the second minute Kadar tindak balas pada minit ke-2 Average rate of reaction in the second minute Kadar tindak balas purata pada minit ke-2 Average rate of reaction in the first 2 minutes Kadar tindak balas purata dalam 2 minit pertama

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The molecular formula of X nitrate and potassium phosphate are X(NO3)2 and K3PO4 respectively. What is the molecular formula of X phosphate?

Formula molekul bagi X nitrat dan kalium fosfat adalah X(NO3)2 dan K3PO4 masingmasing. Apakah formula molekul bagi X fosfat?

A

23.

9

XPO4

B

X2PO4

C

X2(PO4)3

D

X3(PO4)2

The diagram below shows a flow chart for a reaction of the oxide of an element in Period 3 of the Periodic Table.

Rajah di bawah menunjukkan carta alir bagi tindak balas oksida suatu unsur dalam Kala 3 Jadual Berkala.

Oxide of X Oksida bagi X

+ HNO3

+ NaOH

Dissolves to form a colourless solution Larut membentuk larutan tak berwarna

Dissolves to form a colourless solution Larut membentuk larutan tak berwarna

What is X? Apakah X? A

24.

Sodium Natrium

B

Sulphur Sulfur

C

Aluminium Aluminium

D

Magnesium Magnesium

Compound X conducts electricity in aqueous solution and molten state. It also has high melting point and boiling point. What is X? Sebatian X mengkonduksikan elektrik dalam larutan akueus dan keadaan lebur. Ia juga mempunyai takat lebur dan takat didih ynag tinggi. Apakah X? A

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CCl4

B

MgCl2

C

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CO2

D

NH3

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Which of the following is correct about electrolyte?

Antara berikut, yang manakah betul tentang elektrolit?

A B C D

26.

10

Dissolves in water Larut dalam air Conducts electricity in solid state Mengkonduksikan elektrik dalam keadaan pepejal Exist as liquid at room temperature Wujud sebagai cecair pada suhu bilik Has free moving ions in aqueous state Mempunyai ion-ion yang bebas bergerak dalam keadaan akueus

0.1 mol dm-3 solution of X has a pH value of 13. Which statement is correct about the solution?

0.1 mol dm-3 larutan X mempunyai nilai pH 13. Pernyataan manakah betul tentang larutan itu?

A B C D

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X is a weak acid X ialah suatu asid lemah X is a strong alkali X ialah suatu alkali kuat X dissociates partially in water X bercerai separa dalam air X has high concentration of hydrogen ions X mempunyai kepekatan ion hidrogen yang tinggi

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11

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Table below shows the pH value when a certain volume of 1.0 mol dm-3 hydrochloric acid is added to 25 cm3 of 1.0 mol dm-3 sodium hydroxide solution.

Jadual di bawah menunjukkan nilai pH apabila suatu isi padu tertentu asid hidroklorik 1.0 mol dm-3 ditambah kepada 25 cm3 larutan natrium hidroksida 1.0 mol dm-3.

Volume of hydrochloric acid (cm3) Isi padu asid hidroklorik (cm3) 0 10 25 40

pH value Nilai pH 14 13 X 2

What is the value of X? Apakah nilai X? A

28.

4

B

7

C

9

D

12

The diagram below shows the structural formula of a polymer.

Rajah di bawah menunjukkan formula struktur satu polimer.

H H H H H H H | | | | | | | ~C–C–C–C–C–C–C~ | | | | | | | H CH3 H CH3 H CH3 H What is the structural formula of its monomer?

Apakah formula struktur monomernya?

A

H H | | C–C | | H CH3

B

H H | | C=C | | H CH3

C

CH3 H | | C=C | | H CH3

D

H H | | H–C–C–H | | H CH3

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The reaction between barium chloride solution and lead(II) nitrate solution produces lead(II) chloride and barium nitrate. Which ionic equation represents the reaction?

Tindak balas antara larutan barium klorida dan plumbum(II) nitrat menghasilkan plumbum(II) klorida dan barium nitrat. Persamaan ion yang manakah mewakili tindak balas itu?

A

Pb2+ + 2Cl- → PbCl2

B

Ba2+ + 2Cl- → BaCl2

C

Pb2+ + 2NO3- → Pb(NO3)2

D Ba2+ + 2NO3- → Ba(NO3)2

The following equation represents the oxidation reaction between ethanol and acidified potassium dichromate(VI) .

Persamaan berikut mewakili tindak balas pengoksidaan antara etanol dan kalium dikromat(VI) berasid.

3C2H5OH + 2K2Cr2O7 + 8H2SO4 → 3CH3COOH + 2Cr2(SO4)3 + 2K2SO4 + 11H2O What is the change in oxidation number of chromium?

Apakah perubahan nombor pengoksidaan bagi kromium?

31.

A

+2 to +6 +2 kepada +6

B

+3 to +6 +3 kepada +6

C

+6 to +2 +6 kepada +2

D +6 to +3 +6 kepada +3

Which metal can prevent rusting when it is in contact with iron?

Logam manakah dapat mencegah pengaratan apabila bersentuhan dengan besi?

A

Lead Plumbum

C Silver Argentum

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B

Copper Kuprum

D Magnesium Magnesium

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33.

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Which compound is a saturated hydrocarbon?

Sebatian manakah adalah hidrokarbon tepu?

A

CH3CHCHCH3

B

CH3CH2CH2CH3

C

CH2CHCH2CH2CH3

D CH3CHCHCH2CH3

The diagram below shows the apparatus set-up to study the transfer reaction of electron at a distance.

Rajah di bawah menunjukkan susunan radas untuk mengkaji tindak balas pemindahan elektron pada suatu jarak.

Which of the following occur at X and Y? Antara berikut, yang manakah berlaku di X dan Y?

A B C D

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X Mass of X increases Jisim X bertambah Iodide ion is oxidized Ion iodida dioksidakan Brown solution turns colourless Larutan perang menjadi tidak berwarna Oxidation number of iodine changes from 0 to +2 Nombor pengoksidaan iodin berubah dari 0 ke +2

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Y Mass of Y increases Jisim Y bertambah Bromine is reduced Bromin diturunkan No change in colour Tiada perubahan warna Oxidation number of bromine changes from -1 to 0 Nombor pengoksidaan bromin berubah dari -1 ke 0

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B C D

37.

To make soap softer Menjadikan sabun lebih lembut To reduce the solubility of soap Mengurangkan keterlarutan sabun To produce soap which foams easily Menghasilkan sabun yang berbuih dengan mudah To speed up the reaction to produce soap Mempercepatkan tindak balas untuk menghasilkan sabun

The joint of a student’s leg is swollen and painful. What medicine is suitable to be given to the student?

Sendi kaki seorang murid bengkak dan berasa sakit. Apakah ubat yang sesuai diberikan kepada murid itu?

A

36.

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Why is sodium chloride used in the preparation of soap?

Mengapakah natrium klorida digunakan dalam penyediaan sabun?

A

35.

14

Insulin Insulin

B

Penicillin Penisillin

C

Barbiturate Barbiturat

D

Paracetamol Parasetamol

The melting point of substance X is 50°C. What is the change in the movement of the particles in substance X from 60°C to 80°C? Takat lebur bahan X ialah 50°C. Apakah perubahan pergerakan zarah dalam bahan X pada 60°C hingga 80°C? A

Faster Semakin cepat

B

Slower Semakin perlahan

C

No change Tidak berubah

D

Not moving Tidak bergerak

0.2 mol of X reacts chemically with Y to form a compound with a formula of X2Y. What is the mass of substance Y which has reacted? [Relative atomic mass: X = 24, Y = 35.5] 0.2 mol X bertindak balas dengan Y untuk membentuk satu sebatian dengan formula X2Y. Apakah jisim bahan Y yang bertindak balas? [Jisim atom relatif: X = 24, Y = 35.5] A

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2.40 g

B

3.55 g

C

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4.80 g

D

7.10 g

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A student was asked to identify compound Z. He was given the following information.

Seorang pelajar diminta mengenal pasti sebatian Z. Beliau telah diberi maklumat berikut: Composition of elements in substance Z (%) Komposisi unsur dalam bahan Z (%) Carbon, C Hydrogen, H Oxygen, O Karbon, C Hidrogen, H Oksigen, O 48.65 8.11 43.24 Compund Z is a colourless liquid at room temperature and soluble in water.

Sebatian Z ialah cecair tidak berwarna pada suhu bilik dan larut dalam air.

Based on the information given, which of the following pair is the simplest ratio of the elements carbon, hydrogen and oxygen and the name of compound Z? [Relative atomic mass: H =1, C = 12, O = 16] Berdasarkan maklumat yang diberikan, antara pasangan berikut, yang manakah nisbah teringkas unsur-unsur karbon, hidrogen dan oksigen serta nama bagi sebatian Z? [Jisim atom relatif: H =1, C = 12, O = 16] Simplest ratio of element, C : H : O Nisbah teringkas unsur, C : H : O A B C D

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1:2:1 1:2:1 3:6:2 3:6:2

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Name of compound Z Nama sebatian Z Ethanoic acid Asid etanoik Glucose Glukosa Propanoic acid Asid propanoik Methyl methanoate Metil metanoat

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Which of the following mixture reacts when heated strongly?

Antara campuran berikut, yang manakah bertindak balas apabila dipanaskan dengan kuat?

A B C D

40.

16

Tin and zinc oxide Stanum dan zink oksida Copper and lead(II) oxide Kuprum dan plumbum(II) oksida Carbon and magnesium oxide Karbon dan magnesium oksida Aluminium and copper(II) oxide Aluminium dan kuprum(II) oksida

The diagram below shows the position of some elements in the Periodic Table of Elements.

Rajah di bawah menunjukkan kedudukan beberapa unsur dalam Jadual Berkala Unsur.

Which atoms form ions with the electron arrangement of 2.8?

Atom-atom manakah membentuk ion-ion dengan susunan elektron 2.8?

A

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P and Q P dan Q

B

Q and R Q dan R

C

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R and S R dan S

D

P and S P dan S

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Iron can be extracted from its ore by heating the ore with carbon.

Ferum boleh diekstrak daripada bijihnya dengan memanaskan bijih itu dengan karbon.

Ore + 4CO → 3Fe + 4CO2 Bijih + 4CO → 3Fe + 4CO2 What is the possible formula of the ore?

Apakah kemungkinan formula bagi bijih itu?

A

42.

Fe2O3

B

Fe3O2

C

Fe3O4

D

Fe4O3

The table below shows information about three chemical cells.

Jadual di bawah menunjukkan maklumat tentang tiga sel kimia.

Chemical cell Sel kimia I II III

Pair of electrodes Pasangan elektrod J, K J, L L, M

Voltage / V Voltan / V 2.7 1.5 0.6

Positive terminal Terminal positif K L L

Which of the following is the correct descending order of these metals in the electrochemical series?

Antara berikut, yang manakah susunan secara menurun yang betul bagi logam-logam dalam siri elektrokimia?

A

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M, L, K, J

B

J, L, M, K

C

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J, M, L, K

D

K, L M, J

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Which substance will react completely with 100 cm3 of 1.5 mol dm-3 sulphuric acid?

[Relative atomic mass: H =1, C = 12, O = 16, Na = 23, S = 32, Cu = 64] Bahan manakah akan bertindak balas lengkap dengan 100 cm3 asid sulfurik 1.5 mol dm-3?

[Jisim atom relatif: H =1, C = 12, O = 16, Na = 23, S = 32, Cu = 64] 100 cm3 of 1.5 mol dm-3 potassium hydroxide solution 100 cm3 larutan kalium hidroksida 1.5 mol dm-3 II 100 cm3 of 1.5 mol dm-3 barium hydroxide solution 100 cm3 larutan barium hidroksida 1.5 mol dm-3 III 12 g copper(II) oxide 12 g kuprum(II) oksida IV 15.9 g sodium carbonate powder 15.9 g serbuk natrium karbonat I

A

44.

I and II I dan II

B

III and IV III dan IV

C

I, II and III I, II dan III

D

II, III and IV II, III dan IV

Which of the following is an oxidation process?

Antara berikut, yang manakah proses pengoksidaan?

A B C D

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Ethene changes into ethane Etena berubah menjadi etana Copper(II) oxide loses its oxygen Kuprum(II) oksida kehilangan oksigennya A sodium atom forms a sodium ion Atom natrium membentuk ion natrium A bromine molecule gains electrons Molekul bromin menerima elektron

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The following statements are about salt R. Pernyataan berikut adalah berkaitan garam R. • • •

When R is dissolved in distilled water, an orange solution is obtained Apabila R dilarutkan ke dalam air suling, larutan jingga diperoleh If ammonia solution is added into solution R, a brown precipitate is formed Jika larutan ammonia ditambah ke dalam larutan R, mendakan perang diperoleh When R is heated strongly, a colourless gas which turns limewater milky is produced.

Apabila R dipanaskan dengan kuat, gas tidak berwarna dibebaskan dan menukarkan air kapur menjadi keruh.

What are the ions in R? Apakah ion yang terdapat dalam R? A

Fe2+ and NO3- ions Ion-ion Fe2+ dan NO3-

B

Pb2+ and NO3- ions Ion-ion Pb2+ dan NO3-

C

Fe3+ and CO32- ions Ion-ion Fe3+ dan CO32-

D

Fe3+ and SO42- ions Ion-ion Fe3+ dan SO42-

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The table below shows the temperature change when silver nitrate solution reacts with sodium chloride solution.

Jadual di bawah menunjukkan perubahan suhu apabila larutan argentum nitrat bertindak balas dengan larutan natrium klorida.

Reactants Bahan tindak balas 50 cm3 of 2.0 mol dm-3 silver nitrate solution 50 cm3 larutan argentum nitrat 2.0 mol dm-3 + 50 cm3 of 2.0 mol dm-3 sodium chloride solution 50 cm3 larutan natrium klorida 2.0 mol dm-3 50 cm3 of 1.0 mol dm-3 silver nitrate solution 50 cm3 larutan argentum nitrat 1.0 mol dm-3 + 50 cm3 of 1.0 mol dm-3 sodium chloride solution 50 cm3 larutan natrium klorida 1.0 mol dm-3

Temperature change / °C Perubahan suhu / °C θ

x

What is x?

Apakah x?

A ¼θ

B

½θ

C

θ

D

2θ

47. A glass containing 100 g of water at 27°C was placed in the refrigerator. The water loses 10.5 kJ of energy as it cools to a constant temperature. What is its new temperature?

[Specific heat capacity of water = 4.2 J g-1°C-1] Sebuah gelas yang mengandungi 100 g air pada 27°C telah diletakkan ke dalam peti sejuk. Air tersebut kehilangan 10.5 kJ tenaga apabila ia menyejuk pada suatu suhu tetap.

Apakah suhu barunya? [Muatan haba tentu air = 4.2 J g-1°C-1] A

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2°C

B

10°C

C

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25°C

D

27°C

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48.

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The diagram below shows the result of Experiment I and Experiment II for the decomposition of hydrogen peroxide solution in the presence of manganese(IV) oxide.

Rajah di bawah menunjukkan keputusan Eksperimen I dan Eksperimen II bagi penguraian larutan hidrogen peroksida dengan kehadiran mangan(IV) oksida.

Experiment I uses 50 cm3 of 1.0 mol dm-3 hydrogen peroxide solution at room temperature. What is used in Experiment II to obtain the curve in the diagram above?

Eksperimen I menggunakan 50 cm3 larutan hidrogen peroksida 1.0 mol dm-3 pada suhu bilik. Apakah yang digunakan dalam Eksperimen II untuk memperoleh lengkung yang ditunjukkan dalam rajah di atas?

A B C D

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Hydrogen peroxide Hidrogen peroksida Volume (cm3) Concentration (mol dm-3) Isi padu (cm3) Kepekatan (mol dm-3) 25 0.5 25 1.0 50 0.5 50 1.0

© 2018 Hak Cipta Panitia Kimia SMK Sultan Yussuf

Temperature (°C) Suhu (°C) 42 37 37 42

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49.

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The photograph below shows latex produced from a tapped rubber tree.

Gambar foto di bawah menunjukkan latex yang dihasilkan daripada pokok getah yang ditoreh.

After one day, a natural process occurs and the latex changes into a different state.

Choose a substance which is suitable to be added into the latex to prevent the process from occuring.

Selepas satu hari, suatu proses semulajadi berlaku dan lateks berubah kepada keadaan lain. Pilih bahan yang sesuai untuk dicampurkan kepada lateks untuk mengelakkan proses itu berlaku.

A

50.

Petrol Petrol

B

Ethanol Etanol

C

Ethanoic acid Asid etanoik

D

Ammonia solution Larutan ammonia

The following equation shows the combustion of heptane, C7H16 in excess oxygen.

Persamaan di bawah menunjukkan pembakaran heptana, C7H16 dalam oksigen berlebihan.

C7H16 + 11O2 → 7CO2 + 8H2O

∆H = -5512 kJ mol-1

Calculate the mass of heptane used to release 1387 kJ of energy.

[Relative atomic mass: H = 1, C = 12] Hitung jisim heptana yang digunakan untuk membebaskan haba sebanyak 1387 kJ. [Jisim atom relatif: H = 1, C = 12] A

25.0 g

B

36.0 g

C

77.0 g

D

88.0 g

END OF QUESTION PAPER KERTAS SOALAN TAMAT

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INFORMATION FOR CANDIDATES MAKLUMAT UNTUK CALON 1.

This question paper consists of 50 questions.

Kertas soalan ini mengandungi 50 soalan.

2.

Answer all questions.

Jawab semua soalan.

3.

Each question is followed by four alternative answers, A, B, C and D. For each question, choose one answer only. Blacken your answer on the objective answer sheet provided.

Tiap-tiap soalan diikuti empat pilihan jawapan, iaitu A, B, C dan D. Bagi setiap soalan, pilih satu jawapan sahaja. Hitamkan jawapan anda pada kertas jawapan objektif yang disediakan.

4.

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

Jika anda hendak menukar jawapan, padamkan tanda yang telah dibuat. Kemudian hitamkan jawapan yang baharu.

5.

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

Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.

6.

You may use a scientific calculator.

Anda dibenarkan menggunakan kalkulator saintifik.

Prepared by: Disediakan oleh:

Checked by: Disemak oleh:

Verified by: Disahkan oleh:

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

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

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

(CIK INTAN ZAREENA ZAHEDI)

(PN. NURRUL ‘AINNI MD. TENI)

(PN. NORLIZA MD DERUS)

Ketua Unit Kimia Ting. 6

Guru Kanan Sains

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Š 2018 Hak Cipta Panitia Kimia SMK Sultan Yussuf

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