question p1

CONFIDENTIAL 4541/1

PAGE 17CONFIDENTIAL 4541/1

JABATAN PELAJARAN TERENGGANU

Ujian Pengesanan TOV SPM2007

CHEMISTRYPaper 1One hour and fifteen minutes

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

1. Kertas ini mengandungi 50 soalan.

2. Jawab semua soalan.

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

4. Bagi setiap soalan, hitamkan satu ruangan sahaja.

5. Sekiranya anda hendak menukar jawapan, padamkan tanda yang telah dibuat. Kemudian hitamkan jawapan yang baru.6. Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.7. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram.Kertas soalan ini mengandungi 34 halaman bercetak

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. 1The final step in scientific method is

Acollecting data

Bwriting report

Cdoing observation

Dforming hyphothesis2Element J has 14 neutron and 13 proton. Which of the following diagram is the electron arrangement of element J?.

3Molecular formula of propene is C3H6.

What is the empirical formula of propene?

ACH

BCH2

C(CH2)6

D(CH2)n4Argon atom has an electron arrangement of 2.8.8 Which of the following is true for argon?

AExist as diatomic atom

BHas high melting point

CIs in group 18 in the Periodic Table of Elements

DReacts with oxygen to form covalent compound5The diagram shows the electron arrangement of a molecule of carbon dioxide, CO2

Which of the following statements is true about the molecule?

AThe compound has high melting pointBOne carbon atom sharing four pairs of electron

C The bonding between molecules CO2 is covalent bondingDEach of oxygen atom receives two electrons to form an oxide ion

6The diagram shows the set up of the apparatus of an experiment to investigate the electrical conductivity of several compounds.

The bulb will light up if compound Z is

Aetanoic acid glacial

Bmolten potassium iodide

Cmagnesium oxide powder

Dsolid aluminium chloride

7Which of the following acid has the lowest quantity of hydrogen ion, H+ in 1.0 mol of solution?

ANitric acid

BEthanoic acid

CSulphuric acid

DHydrochloric acid8Which of the following is true about alloy and its major component? AlloyMajor component

ADuraluminMagnesium

BSteelTin

CBronzeCopper

DPewterZinc

9The equation shows the reaction between magnesium metal with nitric acid.

Which of the following varible is suitable to determine rate of the reaction above?

AIncreasing the mass of magnesium

BIncreasing the volume of hydrogen gas

CIncreasing the concentration of nitric acid

DDecreasing the concentration of magnesium nitrate10 The figure shows the structural formula of ethene molecule.

Which of the following is true about ethene?

ASoluble in water

BSynthetic polymer

CMolecular formula is CH2

DHas only carbon and hydrogen elements11The table shows the proton number of elements P, Q and R. ElementProton Number

P11

Q17

R18

Which of the following is true about the above elements?AElement P and element R exist as diatomic molecule.

BElement P is more electronegative than element Q.

CElement P is more reactive than element R when it reacts with water.

DElement P and element Q react to form a compound which has high melting point.

12Which of the following chemical formulae is true for iron(III) sulphate?

AFeSO4

BFe3SO4

CFe(SO4)3

DFe2(SO4)313 The table shows the elements in period 3 of the Periodic Table of Elements. ElementsNaMgAlSiPSClAr

Which of the following properties increase in value when moving across the period from Na to Ar?

ANumber of shell which contains electrons

BMetallic property

CElectronegativity

DAtomic radius14Which of the following is true about covalent compound?

AConduct electricity in molten or aqueous state

BLow melting point

CSoluble in water

DNot volatile15The digram shows the set up of the apparatus of elecrolysis of 0.05 mol dm-3 nictric acid.

What are the products at electrode X and electrode Y?

XY

AHydogenNitrogen dioxide

BHydrogenOxygen

COxygenHydrogen

DNitrogen dioxideOxygen

16Solution R has pH 2. Which of the following solutions can neutralize solution R?

ASulphuric acid

BMagnesium sulphate

CCopper(II) chloride

DTin(II) oxide

17Which of the following is true about manufactured substance in industry and its uses?Manufactured Substance in IndustryUses

APolytheneLenses

BLead glassMirror

CPhotochromic glassOptical lenses

DPlastic reinforced with glassTest tube

18Which of the following factors can increase the quantity of reactant particles per unit volume?

AAdding the suitable catalyst

BIncreasing the temperature of reactant

CIncreasing the total surface area of reactant

DIncreasing the concentration of reactant 19The diagram shows the set-up of the apparatus of chemical cell.

Which of the following statements is true about the cell?

IIodide ion is oxidised by donating electron to form iodine

IISulphuric acid allows the flow of electrons through its solution

IIIBromine water receives electron and is an oxidising agent

IVThe colour of solution around S rod turns from colourless to brownAI and III only

BII and IV only

CI, III and IV only

DI, II, III and IV20Particle W with 12 protons, 10 electrons, and 12 neutrons has I nucleon number 24

II proton number 10III electron arrangement 2.8 IV ionic formula W2+AII dan IV only

BI, III dan IV only

CII, III dan IV only

DI, II, III dan IV

21Which of the following is a balanced equations?

AHCl + Ag AgCl + H2

BMgCO3 + H2SO4 MgSO4 + H2O + CO2CZn + CuNO3 Cu + ZnNO3D2K + H2O 2KOH + H222 The digram shows electron arrangement of ion G which formed from atom G.

Ion GWhich of the following statements is true about atom G?

AHas electron arrangement 2.8.8.1

BOccupies the third period of the Periodic Table of Elements

CBelongs to group 13 of the Periodic Table of Elements

DReacts with chlorine to form covalent compound ElementRSTU

Electron arrangement2.42.82.8.72.8.8.2

23The table shows electron arrangements of elements R, S, T dan U.

Which of the following pair of elements can form ionic compound?

AR dan S

BS dan U

CT dan U

DR dan T24The diagram shows the set-up of the apparatus of electrolysis process.

The half equation at the anode is

A4OH-(aq) 2H2O() + O2(g) + 4e

BAg(s) Ag+(aq) + e

C2H+(aq) + 2e H2(g)

DAg+(aq) + e Ag(s)

25 Which of the following chemical substances react with hydrochloric acid to produce sodium chloride and water only?

ASodium hydroxide

BSodium sulphate

CLead(II) chloride

DZinc carbonate

26The following diagram is a structural formula of a polymer.

CH3 H

C C

H C2H5

Which of the following is the monomer fot the above polimer.

HH H H

AH C C = C C H

H H

HH H H H

BH C C = C C C H

H H H

HH H H H

CH C C C C = C H

H H H

HH H H H

DH C = C C C C H

H H H

27Which of the following statements is true when the temperature applied is increased?

AThe rate of reaction decreases.

BThe activation energy of the chemical reaction decreases.CThe number of reactant particles that posseses energy equivalent to or more than the activation energy increases.

DAll collisions of reactant particles are effective collisions.28What is the purpose of adding ascorbic acid to food?

Ato neutralise food

Bto improve its taste

Cto prevent oxidation

Dto inhibit the growth of microorganisms29Ir is the symbol for the element Iridium.

An atom of Iridium has A77 neutrons

B115 protons

Crelative atomic mass is 269

Dthe total number of proton and neutron is 19230The electron arrangement of an atom for the element X is 2.4. X reacts with chlorine, Cl2.

Which is the correct chemical formula for the compound formed?

AXCl

BXCl4

CXCl2

DX4Cl

31The table shows the proton number of elements W, X dan Y

ElementProton Number

W3

X11

Y19

Which of the following is the arrangement in order of increasing reactivity when these elements react with water?

AW, X, Y

BY, X, W

CY, W, X

DX, Y, W

32The symbol of an atom for element Z is shown below.

Atom Z forms covalent bond with atoms from different elements to achieve the octet electron arrangement. The process involves the.....

Areleases of two electrons

Bsharing of two electrons