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2007

CONFIDENTIAL

4541/1 Chemistry Paper 1 October

1'!4 hour

4541/1

JABATAN PELAJARAN TEREN'GGANU DENGAN KERJASAMA

PERSIDANGAN KEBANGSAAN PENGETUA SEKOLAH MENENGAH MALAYSIA

CAWANGANTERENGGANU

PEPERIKSAAN AKHIR TAHUN 2007

TINGKATAN EMPAT

CHEMISTRY

Paper 1

One hour and fifteen minutes

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

1. Kertas soalan ini adalah dalam dwibahasa.

2. Kertas soalan ini mengandungi 50 soalan. Jawab semua soalan.

3. Jawab dengan cara menghitamkan ruangan yang betul pada kertas jawapan.

4. Bagi setiap soalan, hitamkan satu ruangan sahaja.

5. Sekiranya anda hendak menukarjawapan, padamkan tandayang telah dibuat. Kemudian hitamkan pilihan jawapan yang baru.

6. Rajah yang mengiringi soalan tidak dilukis mengikul skala kecuali dinyatakan.

7. Am/a dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogramkan.

Kertas soalan ini mengandungi 27 halaman bercetak

4541/1 © PKPSM Cawangan Terengganu 2007 [Next page CONFIDENTIAL

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CONFIDENTIAL 2 4541/1

Instructions: Question 1 to Question 50 are followed by four options A, B, C and D. Choose the best option/or each question and blacken the corresponding space on the objective answer sheet.

Arahan: Soalan 1 hingga 50 diikuti oleh empat pilihan jawapan A, B, C dan D. Pilih satu jawapan yang terbaik bagi tiap-tiap soalan dan hitamkan ruangan yUl1g sepadan pada kertas jawapan objektif anda.

The statements below are the steps involved in writing an experiment report : Pernyataan-pernyataan di bawah merupakan langkah-langkah yang telibat dalam menulis suatu laporan eksperimen :

H Stating the aim of the experiment Menyatakan tujuan eksperimen

I Listing the procedures of the experiment Menyenaraikan langkah-langkah /prosedur eksperimen

J Listing the apparatus and chemical needed Menyenaraikan alat radas dan bahan yang diperlukan

K Tabulation of data Membinajadual data

L Making a conclusion Membuat kesimpulan

Which of the following is the correct sequence? Antara berikut, yang manakah urutan yang betul?

A H, I, J, K, L

B I, H, J, L, K

C H, J, I, K, L

D J, I, H, K, L

Chemistry Paper I [Next page Year End Examination 2007 CONFIDENTIAL


2 The graph below shows the relationship between the mass of salt added to distilled water with the boiling point of water.

Grafdi bawah menunjukkan hubungan antara jisim garam yang ditambah kepada air suling dengan takat didih air.

Boiling point/ °C Takat didih/ °C

o 2 3

140

120

100 ¥------t----r-------r------+ Mass of salt/ g Jisim garam/ g

Which of the following inferences is correct?

Antara inferens berikut, yang manakah benar?

A The boiling point of water is constant. Takat didih air adalah tetap.

B The higher the mass of salts added, the higher the boiling point of water. Semakin tinggi jisim garam yang ditambah, semakin tinggi takat didih air.

C The higher the mass of salts is added, the lower the boiling point of water. Semakin tinggi jisim garam yang ditambah, semakin rendah takat didih air.

D The higher the boiling point of water, the larger the mass of salt dissolved in it. Semakin tinggi takat didih air, semakin bertambah jisim garam yang larut di dalamnya.

Chemistry Paper I [Next page CONFIDENTIAL~~End Examination 2007


3 Diagram below shows potassium manganate(VII) crystal placed in a beaker containing some water. Rajah di bawah menunjukkan hablur kalium manganat(Vll) yang diletakkan ke dalam sebuah bikar yang nengandungi air.

potassium manganate(VII) crystal water hablur kalium manganat(VII) air - - -

What wi II be the observation after a few hours? Apakah yang akan dapat diperhatikan selepas beberapa jam?

A Two layers are formed Terbentuk dua lapisan.

B A purple solution is formed. Larutan ungu terbentuk.

C A colourless solution is formed. Larutan tidak berwarna terbentuk.

D Potassium manganate(VII) crystal undissolved inwater. Hablur kalium manganat(Vll) tidak larut dalam air.

4 The formula of calcium carbonate is CaC03 . The relative formula mass of calcium carbonate is Formula bagi kalsium karbon at ialah CaC03 . Jisimformula relatifbagi kalsium karbonat ialah [ Relative atomic mass / Jisim atom relatif : C = 12, 0 = 16, Ca = 40]

A 68 B 84

cIao D 116

Chemistry Paper J INext page Year End Examination 2007 CONFIDENTIAL

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Which of the following elements are in Group I, in the Periodic Table of Elements? Antara berikut, unsur-unsur yang manakah berada dalam Kumpulan 1, Jadual Berkala Unsur?

A Helium, neon and krypton Helium, neon dan kripton

B Hydrogen, nitrogen and oxygen Hidrogen. nitrogen dan oksigen

C Lithium, sodium and potassium Litium, natrium dan kalium

D Calcium, magnesium and zinc Kalsium, magnesium dan zink

Which of the following pairs is true about the physical properties of ionic compound? Antara pasangan berikut, yang manakah benar tentang sifat fizik bagi sebatian ionik?

Solubility in water / Keterlarutan dalam air

Electrical conductivity when molten / Kekonduksian elektrik dalam leburan

A

B

C

D

Soluble / Larut Soluble / Larut Insoluble Tidak larut Insoluble / Tidak larut

Conducting / Mengkonduksi Not conducting / Tidak menekonduksi Conducting / Mengkonduksi Not conducting / Tidak mengkonduksi

-



7 Which of the following substances can conduct electricity? Antara bahan berikut yang manakah boleh mengkonduksikan elektrik?

I Molten glucose Leburan glukosa

II Molten lead(lI) iodide Leburan plumbum(II) iodida

III Dilute hydrochloric acid Larutan asid hidroklorid cair

IV TetrachIoromethane Tetraklorometana

A I and II only

B I and IV only

C II and III only

D III and IV only

8 Which of the following is true ofa weak acid? Antara berikut, yang manakah benar tentang asid lemah?

A Unable to neutralise alkali. Tidak boleh meneutralkan alkali

B The pH value is more than 7. Nilai pH lebih daripada 7

C Able to change red litmus paper to blue. Boleh menukarkan warna kertas litmus merah ke biru.

D Ionises partially in water to produce hydrogen ions. Mengion separa dalam air menghasilkan ion hidrogen.



9 Which of the following substances is a salt? Antara bahan berikut yang manakah garam

A Magnesium Magnesium

B Copper(ll) oxide kuprum(II) oks ida

C Zinc hydroxide Zink hidroksida

D Lead(lI) iodide plumbum(II) iodida

10 The flow chart below represents the stages of reaction in the manufacture of sulphuric acid. Carta alir di bawah mewakili peringkat-peringkat tindak balas dalam penghasilan asid sulfurik.

Which of the following is correctly matched at stage X? Antara berikut, yang manakah padanan yang betul pada peringkat X?

Temperature / Suhu (0C)

Pressure / Tekanan (atm)

Catalyst / Mangkin

A

B

C

D

I

450

450

550

1000

I

1.0

1.5

2.5

2.5

Vanadium(V) oxide Vanadium(V) oksida

Iron Besi

Vanadium(V) oxide VanadiumtV) oksida

Iron Besi

Chemistry Paper 1 [Next page Year End Examination 2007 CONFIDENTIAL

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11 Which of the following substances containing molecules? Antara bahan beikut, yang manakah mengandungi molekul?

A Sulphur dioxide, S02 Sulfur dioksida, S02

B Zinc sulphate, ZnS04 Zink sulfat, ZnS04

C Sodium chloride, NaCI Natrium klorida, NaCl

D Magnesium nitrate, Mg(N03)2

Magnesium nitrat, Mg(N01)2

How many moles of aluminium are present in a sample containing 3.01 x 1022 aluminium atoms? Berapakah bilangan mol aluminium yang terdapat dalam suatu sampel mengandungi 3.01 x uP atom aluminium? [Avogadro's constant is / Pemalar Avogadro ialah 6.02 x 1023 mol' ]

A 0.02 mol

B 0.05 mol

C 0.20 mol

D 0.50 mol

In Periodic Table, elements are arranged in Group based on Dalam Jadual Berkala, unsur-unsur disusun dalam Kumpulan berdasarkan

A physical properties sifatfizik

B ascending order of proton number pertambahan nombor proton

C ascending order of neutron number pertambahan nombor neutron

D ascending order of nucleon number pertambahan nombor nukleon

Chemistry Paper I [Next page Year End Examination ]007 CONFIDENTIAL


The table below shows the electron arrangement for two atoms, X and Y. Jadual di bawah menunjukkan susunan elektron bagi dua atom, X dan Y

Atom Electron arrangement I

Susunan elektron

X 2.1

Y 2.6

What is the chemical formula for a compound formed between X and Y? Apakah formula kimia bagi sebatian yang terbentuk antara X dan Y?

A XY2

B XY

C X2Y

D X2Y3

In the electrolysis of molten aluminium oxide, AI203 using carbon electrodes, the ions discharged at anode and cathode are

Dalam elektrolisis leburan aluminium oksida, Ah03 menggunakan elektrod-elektrod karbon, ion-ion yang dinyahcaskan pada anod dan katod ialah

A

B

C

D

Anode Cathode Anod Katod

0 2- Ae+

A1 3+ 0 2-

H+ OH

OH A1 3+

Which of the following is true about an alkali? Antara berikut, yang manakah benar tentang suatu alkali?

A An alkali is not corrosive Alkali tidak mengkakis

B A strong alkali has a low pH value Alkali kuat mempunyai pHyang rendah

C An alkali is a base that is soluble in water Alkali merupakan bes yang larut dalam air

D A weak alkali has a high degree of ionisation Alkali lemah mempunyai darjah pengionan yang tinggi

Chemistry Paper I Year End Examination 2007

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Copper(ll) sulphate salt can be prepared through the reaction between Garam kuprum(Il) sulfat boleh disediakan melalui tindak balas antara

A copper metal and dilute sulphuric acid logam kuprum dan asid sulfurik cair

B copper(lI) oxide and dilute sulphuric acid kuprum(JI) oksida dan asid sulfurik cair

C copper(II) carbonate and dilute hydrochloric acid kuprum(I!) karbonat dan asid hidroklorik cair

D copper(II) nitrate and sodium sulphate kuprum(lJ) nitrat dan natrium sulfat

Why do farmers often add ammonium sulphate, (NH4)2S04 to the soil? Mengapakah petani selalu menambahkan ammonium sulfat, (NH4)2S04 kepada tanah?

A To kill insects that are harmful to crops. Untuk membunuh serangga perosak tanaman.

B To increase the oxygen content of the soil. Untuk meningkatkan kandungan oksigen dalam tanah.

C To increase the sulphur content of the soil. Untuk meningkatkan kandungan sulfur dalam tanah.

D To increase the nitrogen content of the soil. Untuk meningkatkan kandungan nitrogen dalam tanah.

Chemistry Paper 1 [Next page Ye'arEnd Examination 2007 CONFIDENTIAL


19 Table below shows the melting and boiling points of substances P and Q.

Jadual di bawah menunjukkan takat lebur dan takat didih bagi bahan P dan Q.

Substance Melting point / Melting point / I Bahan Takat lebur (oC) Takat didih (oC)

P -112 -85

Q -23 77

What is the physical state for substances P and Qat, 25°C respectively?

Apakah keadaanjizik masing-masing bagi bahan P dan Qpada suhu 25°C?

Substance P Substance Q Bahan P Bahan Q

Gas / Liquid / A Gas Cecair

Liquid / Solid / B

Cecair Pepejal

Gas / Gas / C Gas Gas

Liquid / Liquid / D

Cecair Cecair



20 Which of the following statements are true about ammonia gas, NH3?

Antara pernyalaan berikut, yang manakah benar tentang gas ammonia. NH3?

[Relative atomic mass / Jisim alom relatif : H = I, N = 14 ; Avogadro's constant / Pemalar Avogadro = 6.02 x 1023

]

I Mass of one mole of ammonia is 17 g Jisim bagi satu mol ammonia ialah 17 g

II Ammonia is made up of nitrogen and hydrogen in the ratio of 1 : 3 Ammonia dibina daripada nitrogen dan hidrogen dalam nisbah 1 : 3

III One mole of ammonia contains 6.02 x 1023 atoms. Satu mol ammonia mengandungi 3 x 6.02 x 1023 atom.

IV One mole of ammonia contains 6.02 x 1023 molecules. Satu mol ammonia mengandungi 6.02 x 1023 molekul.

A I and II only

B I and III only

C I, II and JII only

D I, II and IV only

21 Table below shows the proton number of elements Land M. Jadual di bawah menunjukkan nombor proIon bagi unsur L dan M.

Element Proton number

Unsur Nombor proton

L 3

M II

Which of the following statements are true of elements Land M? Antara pernyataan berikut, yang manakah benar bagi unsur L dan M?

I M is more reactive than L M lebih reaktifdaripada L

II Land M are in Group I in the Periodic Table of Elements. L dan M berada dalam Kumpulan 1 Jadual Berkala Unsur.

III The atomic size of M is bigger than L Saiz atom M lebih besar daripada L.

IV Both elements Land M do not conduct electricity. Kedua-dua unsur L dan M tidak mengkonduksikan elektrik.

A

B

C D

[ and II only

II and III only

I, II and III only I, II, ][1 and IV

Chemistry Paper I rear End Examination 2()()7

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22 Diagram below shows the electron arrangement in a compound formed from Wand Z. Rajah di bawah menunjukkan susunan elektron dalam satu sebatian yang terbentuk daripada W dan Z.

What is the electron arrangement for Wand Z atoms? Apakah susunan elektron bagi atom W dan Z?

W '!:. A 2.4 2.7 B 2.4 2.8.7 C 2.8 2.8.8 D 2.8 2.8.7


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24


Figure below shows the set-up of apparatus for the electrolysis of silver nitrate, AgN03 solution. Rajah di bawah menunjukkan susunan radas untuk elektrolisis larutan argentum nitrat, AgNOJ•

silver nitrate solution larutan argentum nitrat

Bulb / Mentol

.--- p

-,+--

What is formed at electrode P? Apakah yang terbentuk pada elektrod P?

A Oxygen gas Gas oksigen

B Hydrogen gas Gas hydrogen

C Silver metal Logam argentum

D Nitrogen gas Gas nitrogen

Glacial ethanoic acid is put into four test tubes A, B, C and D. In which test tube does a reaction occur? Asid etanoik glasial dimasukkan ke dalam empat tabung uji A, B, C dan D. Dalam tabung uji manakah berlaku tindak balas?

A c

Glacial ethanoic acid / Glacial ethanoic acid / Asid etanoik glasial Asid etanoik glasial

'-.I-+.#--- pH paper / '\:I!''Y--- Calci urn carbonate chi ps /

KertaspH Serpihan kalsium karbonat

B D GlaCial ethanoic acid / • Glacial ethanoie acid I

::::: Asid etanoik glasial . Asid etanoik glasial ~. !~f. Magnesium ribbon / Sodium carbonate solution I .---- Larutan natrium karbonat I=Pita magnesium

Chemistry Paper I INext page Year End Examination 2007 CONFIDENTIAL


Consider the chemical equation of a reaction below: Pertimbangkan persamaan kimia bagi tindak balas di bawah :

Copper(ll) oxide + X copper(ll) chloride + water

Kuprumill) oksida + X kuprum(II) klorida + air

The substance X is Bahan X adalah

A hydrochloric acid asid hidroklorik

B sodium chloride natrium klorida

C sulphuric acid asid sulfurik

D chlorine gas gas klorin

Stainless steel is an alloy consisting of 74 % iron, 8 % carbon and 18 % chromium. Stainless steel does not rust easily because of the presence of chromium atoms. What is the function of chromium atoms in the alloy?

Keluli nirkarat adalah sejenis alai yang mengandungi 74 % besi, 8 % karbon dan 18 % kromium. Keluli nirkarat tidak mudah berkarat disebabkan kehadiran atom-atom kromium. Apakah fungsi atom-atom kromium dalam alai tersebut?

A To serve as a sacrificed metal and prevent the corrosion of iron. Sebagai logam korban dan menghalang pengaratan besi.

B To prevent the layers of atoms in the alloy from sliding over ane another. Menghalang lapisan atom-atom dalam alai tersebut daripada menggelongsor antara satu sarna lain.

e To form a protective oxide layer on the surface of the alloy. Membentuk satu lapisan oksida sebagai perlindungan pada permukaan aloi.

D To fill up the empty spaces between the atoms and make it denser. Untuk memenuhi ruang-ruang kosong antara atom dan menjadikannya lebih tumpat.



27 Which of the following electron arrangements has three valence electrons? Antara susunan elektron berikut. yang manakah mempunyai tiga elektron valens?

A B

c D

28 When magnesium burns in excess oxygen gas, a white powder magnesium oxide, MgO is formed. Which of the following is a balanced chemical equation to represent the reaction?

Apabila magnesium terbakar dalam oksigen berlebihan, pepejal putih magnesium oks ida, MgO terbentuk. Antara berikut, yang manakah merupakan persamaan tindak balas yang seimbang bagi mewakili tindak balas tersebut?

A Mg(s) + O(g) - MgO(s)

B MgO(s) - Mgrsi + 02(g)

C Mg(s) + 02(g) - MgO(s) + O(g)

D 2Mg(s) + 02(g) - 2MgO(s)

29 In the Periodic Table, P is above Q in the same group. If the number of proton of atom Q is 17, what is the electron arrangement for atom P?

Dalam Jadual Berkala, P berada di atas Q dalam kumpulan yang sama. Jika bilangan proton bagi atom P adalah 17, apakah susunan elektron bagi atom P?

A 2.7

B 2.8.7

C 2.8.8 D 2.8.8.7

Chemistry Paper J [Next page Year End Examination 2007 CONFIDENTIAL


30 Valence electrons of atom X is 2. X reacts with chlorine to form ionic compound with the formula XCIz. Which of the following is X?

Elektron valens bagi atom X adalah 2. X bertindak balas dengan klorin membentuk sebatian ionik dengan XCl z. Antara berikut, yang manakah X?

A Carbon Karbon

B Sodium Natrium

C Lithium Litium

D Magnesium Magnesium

31 Diagram below shows the set-up of the apparatus used to electroplate an iron nail with silver metal.

Rajah di bawah menunjukkan susunan radas yang digunakan untuk menyadur paku besi dengan logam argentum.

!------111 r--'~--l

silver plate Iron nail L'_"M. .._.j

What is observed at anode and cathode after 30 minutes? Apakah yang diperhatikan di anod dan di katod selepas 30 minit?

Paku besi __

t ..

l~ . Kepingan argentum

A

B

C

D

Anode Anod

Cathode Katod

Brown deposits formed Pepejal perang terenap

Silver plate becomes thicker Kepingan argentum menjadi tebal

Silver plate becomes thinner Kepingan argentum menjadi nipis

A layer of silver deposited at the iron nail Lapisan argentum terenap pada paku besi

Silver plate becomes thicker Kepingan argentum menjadi tebal

Gas bubbles released Gelembung gas terbebas

Silver plate becomes thinner Kepingan argentum menjadi nipis

Brown deposits formed Pepejal perang terenap

[Next pageChemistry Paper I CONFIDENTIALYear End Examination 2007

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32 Diagram below shows the set up of the apparatus for the reaction between an acid and a metal.

Rajah di bawah menunjukkan susunan radas bagi tindak balas antara asid dengan suatu logam.

Metal / logam X

Hydrogen gas ---;--=,.

Gas hidrogen Dilute hydrochloric acid / Asid hidroklorik cair

Which of the following is not metal X?

Antara berikut, yang manakah bukan logam X?

A Tin Stanum

B Lead Plumbum

C Copper Kuprum

D Magnesium Magnesium

Which of the following salts will produce nitrogen dioxide, NO z gas when heated? Antara garam berikut, yang manakah akan menghasilkan gas nitrogen dioksida, NOz apabila dipanaskan?

A Sodium nitrate Natrium nitrat

B Iron(lII) nitrate Ferumtlll) nitrat

C Potassium nitrate Kalium nitrat

D Ammonium nitrate Ammonium nitrat



34 Which of the following are true about the environment pollution by polymers?

Antara berikut, yang manakah benar tentang pencemaran alam sekitar oleh polimer?

I Polymers are toxic when they are converted to monomers Polimer adalah beracun apabila ianya ditukar kepada monomer

II Polymers are not easily broken down by decomposers Polimer sukar dipecahkan oleh pengurai

III Polymers stimulate the growth of algae in water Polimer merangsang pertumhuhan alga dalam air

IV Polymers release toxic gases when they are burnt Polimer membebaskan gas beracun apabila ianya dibakar

A I and II only

B II and IV only

C I, II and III only

n I, II, III and IV

35 A particle Q has 3 protons, 4 neutrons and 3 electrons. Which of the following is true about Q?

Zarah Q mempunyai 3 proton, 4 neutron dan 3 elektron. Antara berikut, yang manakah benar tentangQ?

Proton number Nucleon number Number of valence electron Nombor proton Nombor nuk/eon Bi/angan e/ektron va/ens

A 3 7 1

B 3 7 3

C 3 6 I

n 3 6 3



36 An oxide of nitrogen contains 4.2 g of nitrogen and 9.6 g of oxygen. What is the empirical formula of this oxide?

Suatu oksida nitrogen mengandungi 4.2 g nitrogen dan 9.6 g oksigen. Apakah formula empirik bagi oksida ini?

[ Relative atomic mass / Jisim atom relatif : N = 14, 0 = 16 ]

A NO

B N02

C N20

D N20,

37 Elements P, Q and R are located in Period 3 in the Periodic Table of Elements. Oxide P is acidic. oxide Q is amphoteric and oxide R is basic. The correct arrangement of elements P, Q and R in ascending order of their proton number is

Unsur P, Q dan R berada pada Kala 3 dalam Jadual Berkala Unsur. P oksida adalah oksida asid, Q oks ida adalah oksida amfoterik manakala R oksida adalah oksida bes. Susunan yang betul bagi unsur P, Q dan R mengikut susunan menaik nombor proton ialah

A R,Q,P

B P,Q. R C Q, R, P

D R, P,Q


39


38 Atoms U and V has 2 and 7 valence electron each. Which of the following are true about the compound between U and V?

Atom U dan V masing-masing mempunyai 2 dan 7 elektron valens. Antara berikut. yang manakah benar tentang sebatian yang terbentuk antara U dan V?

A

B

C

D

Chemical formula Formula kimia

-

Physical properties Sifat fitik

~_lJ'V Conducting electricity in molten Mengkonduksikan elektrik dalam bentuk leburan

U2V Soluble in water Larut dalam air

UV 2

-

High melting and boiling points Takat lebur dan takat didih tinggi

UV Insoluble in water Tidak larut dalam air

An experiment to study the electropositivity of metals P, Q, Rand S has been conducted. The results obtained are shown in the table below.

Satu eksperimen telah dijalankan untuk mengkaji keelektropositifan logam P, Q, R dan S. Keputusan yang diperolehi ditunjukkan dalamjadual di bawah.

Metal pair Pasangan logam

Negative electrode Elektro(/ negative

P and Q PdanQ

Q

Qand R QdanR

R

Rand S Rdan S

R

I P and S Pdan S P

Based on this result, the electropositivity of the metals P ,Q ,R and S in descending order is Berdasarkan keputusan eksperimen, susunan menurun keelektropositifan logam P,Q, R dan S ialah

A S, P, Q, R

B Q,S,R, P

C R,P,S,Q

D R, Q, P, S

Chemistry Paper / INext page Year End Examination 2007 CON FIDENTIA L


40 Which of the following solutions have the same mass of potassium hydroxide as in 20 ern' of 5.0 mol drn" potassium hydroxide solution? Antara larutan berikut, yang manakah mempunyai jisim yang sama seperti yang terdapat dalam 20 em] larutan kalium hidroksida 5.0 mol dm'?

I 50 crrr' of2.0 mol dm" potassium hydroxide solution. 50 em] larutan kalium hidroksida 2.0 mol dm"

II 100 cm' of 1.0 mol dm' potassium hydroxide solution. 100 em' larutan kalium hidroksida 1.0 mol dm'

III ISO crrr' of 0.8 mol dm" potassium hydroxide solution. ISO em] larutan kalium hidroksida 0.8 mol dm'

IV 200 ern' of 0.2 mol drn" potassium hydroxide solution. 200 em] larutan kalium hidroksida 0.2 mol dm'

A I and II only

B III and IV only C I, II and III only

D I, II, [II and IV only

41 Which of the following salts can be prepared by acid-alkali titration method? Antara garam berikut manakah dapat disediakan melalui kaedah titratan asid-alkali?

I Sodium nitrate Natrium nitrat

II Ammonium chloride Ammonium klorida

III Calcium nitrate Kalsium nitrat

IV Magnesium carbonate Magnesium karbonat

A I and II only

B I and III only

C " and III only D III and IV only

Chemistry Paper 1 [Next page Year End Examination 2007 CONFIDENTIAL

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42 Which of the following types of glass has the correct compositions? Antarajenis kaca berikut, yang manakah mempunyai komposisi yang betul?

A

B

C

D

Type of glass Compositions

Fused glass / Kaca silika terlaku

Si02, Na20, K20, PbO, CaO

I Soda lime glass / Kaca soda kapur

Si02, Na20, CaO

Borosilicate glass / Kaca borosilikat

Si02, B20 3

Lead crystal glass / Kaca plumbum

Si02, Na20, A1 20 3, PbO

12 14

X Y 6 6

Which of the following statements is true about the symbols of X and Y? Antara pernyataan berikut, yang manakah benar tentang simbol X dan Y?

A X and Y have same nucleon number X dan Y mempunyai nombor nukleon yang sarna

B X and Y have same number of neutrons X dan Y mempunyai bilangan neutron yang sarna

C X and Y have 6 valence electrons each X dan Y mempunyai masing-masing mempunyai 6 elektron valens

D X and Y have same chemical properties X dan Y mempunyai sifat kimia yang sarna

Chemistry Paper J [Next page Year End Examination 2007 CONFIDENTIAL

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CONFIDENTIAL 45411124

44 The equation below shows the action ofheat on the carbonate salt of metal X.

Persamaan di atas menunjukkan tindakan haba ke atas garam karbonat bagi logam X

How many moles of XC03 are needed to produce 24 crrr'of carbon dioxide gas at room condition?

Berapakah bilangan mol XC03 yang diperlukan untuk menghasilkan 24 em' gas karbon dioksida pada keadaan bilik?

[ The molar volume of a gas at room conditions is / Isipadu molar gas pada keadaan bilik adalah 24 dm' mol"]

A 0.001 dm'

B 0.002 drrr'

C 0.010 drrr'

D 0.020 dm'

Table below shows the proton number of elements Rand S.

Jadual di bawah menunjukkan nombor proton bagi unsur R dan S.

Element Proton number

Unsur Nombor proton

R I I

S 17

Which of the following statements are true about elements Rand S?

Antara pernyataan berikut, yang manakah adalah benar tentang unsur R dan S?

I R is more electronegative than S R lebih elektronegatifberbanding S

II The atomic size of R is bigger than S Saiz atom R lebih besar berbanding S

III Rand S are located in the same group in the Periodic Table R dan S berada dalam kumpulan yang sama dalam Jadual Berkala

IV Rand S are located in the same period in the Periodic Table R dan S berada dalam kala yang sama dalam Jadual Berkala

A I and III only

B I and IV only

C II and III only D II and IV only

Chemistry Paper I [Next page

Year End Examination 2(}(}7 CONFIDENTIAL


46 PQ2 is the compound with high melting point and conducting electricity in molten. What is the electron arrangement for the P atom and Q atom?

PQ2 adalah sebatian yang mempunyai takatlebur yang tinggi serta mengalirkan elektrik dalam keadaan leburan. Apakah susunan elektron yang mungkin bagi atom P dan Q?

E Q

A 2.1 2.6 B 2.2 2.7 C 2.4 2.6 D 2.3 2.7

47 Table below shows information about three simple cells.

Jadual di bawah menunjukkan maklumat bagi tiga sel ringkas.

Pair of metal Pasangan logam

X and copper X dan kuprum

Potential difference Beza keupayaan / V

0.45

Metal at negative terminal I Logam pada ,:minatnegaf~1

Y and copper Y dan kuprum

1.30 Y

I

Z and copper Zdan kuprum

I

0.56 I

Cu

What is the potential difference of the pair of metals Y and Z?

Apakah nilai beza keupayaan bagi pasangan logam Y dan Z?

A 0.85 V

B 1.01 V

C 1.86 V

o 2.31 V

Chemistry Paper I INext page Year End Examination 2007 CONFIDENTIAL


48 Table below shows information about two solutions. Jadual di bawah menunjukkan maklumat bagi dua larutan.

Name of solution Nama larutan

Formula Concentration Kepekatun I mol dm"

pH value Nilai pH

Barium hydroxide Barium hidroksida

Ba(OHh 0.5 13

Ammonium hydroxide Ammonium hidroksida

NH40H 0.5 10

Which of the following statements are true based on the information in table above? Antara pernyataan berikut, yang manakah adalah benar berdasarkan maklumat dalam jadual di atas?

I Ammonium hydroxide is a weaker alkali than barium hydroxide solution. Ammonium hidroksida adalah alkali lemah berbanding larutan barium hidroksida

II The degree of dissociation of barium hydroxide in water is higher than that of ammonium hydroxide in water. Darjah penceraian barium hidroksida dalam air adalah lebih tinggi berbanding ammonium hidroksida dalam air.

III The concentration of hydroxide ions, OR in barium hydroxide solution is higher than in ammonium hydroxide solution. Kepekatan ion hidroksida, OH- dalam barium hidroksida adalah lebih tinggi berbanding ammonium hidroksida.

IV Barium hydroxide solution is an electrolyte while ammonium hydroxide solution is nonelectrolyte. Larutan barium hidroksida adalah elektrolit manakala larutan ammonium hidroksida adalah bukan elektrolit.

A I and III only

B III and IV only C I , II and [II only

D I, II , III and IV

Chemistry Paper 1 [Next page

Year End Examination 2007 CONFIDENTIAL


49 Which of the following ions forms a precipitate that dissolves in excess ammonia? Antara ion-ion berikut, yang manakah membentuk mendakan yang larut dalam ammonia berlebihan?

A A1 3+

B Fe3 +

C Pb2+

D Zn2+

50 An engineer needs a material with the following properties to make a product. Seorangjurutera memerlukan sejenis bahan dengan sifat-sifat berikut untuk menghasilkan satu produk.

• Light / Ringan • High tensile strength / Kekuatan regangan yang tinggi • Easily moulded and shaped / Mudah diacu dan diubah bentuk • Easily coloured / Mudah diwarnakan • Low in density / Ketumpatan yang rendah • Chemically inert / Lengai secara kimia

Which of the following materials is the most suitable material for making the product? Antara bahan berikut, yang manakah paling sesuai untuk membuat produk tersebut?

A Ceramic / Seramik B Fibre glass / Gentian kaca C Fibre optic / Gentian optik D Photochromicglass / Kaca fotokromik

END OF QUESTION PAPER KERTAS SOALAN TAMAT

Chemistry Paper I Year End Examination 2007 CONFIDENTIAL

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