SULIT 24541/14541/1 17 SULIT Nama:.................................................... Tingkatan :..............................SULIT4541/1Chemistry Kertas 1Oktober20101 jamBAHAGIAN PENGURUSANSEKOLAH BERASRAMA PENUH DAN SEKOLAH KECEMERLANGANKEMENTERIAN PELAJARAN MALAYSIA

PEPERIKSAAN SELARAS AKHIR TAHUNTINGKATAN 4 TAHUN 2010CHEMISTRY Kertas 1Satu jam lima belas minit

Kertas soalan ini mengandungi 50 soalan.Jawab semua soalanTiap-tiap soalan diikuti oleh 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.Jika anda hendak menukar jawapan, padamkan tanda yang telah dibuat, kemudian hitamkan jawapan yang baru.Rajah yang mengiringi soalan tidak dilukiskan mengikut skala kecuali dinyatakanAnda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogramkan.JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

Kertas soalan ini mengandungi 17 halaman bercetak

1 Table 1 shows the contributions of scientists X and Y towards atomic model.

ScientistContribution

XElectrons are spread across the positively charged atom.

YAtoms are hard spheres which cannot be split.

Table 1 Which of the following represents scientists X and Y?

X YA J.J Thomson John DaltonB Neils Bohr J.J. ThomsonC J.J. ThomsonErnest RutherfordD James Chadwick John Dalton

2 A beaker contains 6.02 x 1023 water molecules? What is the number of moles of water in the beaker? [Avogadro constant = 6.02 X 1023 mol-1]

A 0.5B 1.0C 3.0D 6.03 Proton number of element P is 8. What is the position of this element in the Periodic Table of Elements?

Group PeriodA 16 2B 16 3C 18 2D 18 34 Which of the following statements is true about the elements in Group 17 of the Periodic Table?

A All elements exist as a monoatomic molecule.B All atoms of elements have six valence electrons.C All elements are found in the same period.D All elements can react with sodium hydroxide at room temperature.

5 How does an ionic compound form?

A the transfer of electrons from non-metallic to metallic atoms.B the transfer of electrons from metallic to non-metallic atoms.C the sharing of electron between metallic atoms.D the sharing of electrons between non-metallic atoms.6 The ammeter in the Diagram 1 showed that no current is flowing in the circuit. What is liquid X?

Diagram 1

A Aqueous sodium chloride solutionB Molten magnesium oxideC Dilute sulphuric acidD Tetrachloromethane

7 Which of the following statements are true for both dilute ethanoic acid and dilutehydrochloric acid of the same concentration?

I They have different concentration of hydrogen ions.II Their degree of ionisation in water is the same.III They have different pH value.IV They neutralise equal amount of sodium hydroxide.

A I and II onlyB I and III onlyC II and IV onlyD III and IV only

8 The following word equation shows a chemical reaction.

X + magnesium oxide magnesium chloride + water

What is acid X?

A Hydrochloric acid

B Sulphuric acid

C Phosphoric acid

D Nitric acid

9 Diagram 2 shows the set-up of apparatus used to investigate diffusion in a solid gel.

Potassium manganate(VII) cystalGelDiagram 2

After a few days, the entire solid gel turned purple. What can we deduce from the above investigation?

A Potassium manganate(VII) dissolves in the gel.

B Potassium manganate(VII) is less dense than the gel.

C Potassium manganate(VII) reacts with the gel to produce purple colour

D Potassium manganate(VII) particles diffuse through spaces between the gel particles.

10 Which of the following is a synthetic polymer?

ARubber

BPVC

CProtein

DStarch

11 Why inert gases do not react with other elements?

A They exist as monoatoms. B They have lower melting points.C Atoms of inert gases have stable electron arrangement. D Atoms of inert gases are attracted by weak forces of attraction.

12 Which of the following is true about covalent compound?

A High volatility B Soluble in water.C Have higher melting and boiling point.D Can conduct electricity in all physical state.

13 Diagram 3 shows a chemical cell.

Cu

CuCl2

Diagram 3

A voltage is produced by the apparatus as shown in Diagram 3.What is the metal X that generate the highest voltage? A Iron B Magnesium C Aluminium D Zinc

14 Hydrogen chloride in methylbenzene does not show any acidic property. Which of the followings explain the observation?

A Hydrogen choride is a covalent compound.B Hydrogen choride molecules ionises in the solution.C This solution does not contain hydrogen ions.D This solution show the electrical conductivity.

15 Which of the following are insoluble salts?

I Silver chlorideII Magnesium nitrateIII Barium sulphateIV Zinc carbonate

A I and III onlyB II and IV onlyC I, II and III onlyD I, III and IV only

16 What is the type of glass used to make laboratory glass wares? A Lead glass

B Fused glass

C Borosilicate glass

D Soda glass

17 Table 2 shows the melting points and boiling points of substances S, T, U and V.SubstanceMelting point/oCBoiling point/ o C

S- 182- 162

T- 23 77

U- 97 65

V 41182

Table 2Which substance exists as a gas at room temperature?A S B T C UD V

18 The following information shows the properties of element L. Exhibits oxidation numbers of +2, +3 and +6 in its compounds Forms complex ions Which of the following is true about element L?A It can conduct electricity in solid and liquid states.B It is in Group 17 of the Periodic Table.C It forms coloured compounds. D It has a high melting point.

19 Diagram 4 shows the electron arrangement of a compound formed between P and Q.

Diagram 4Which of the following statements is true about the compound?A It is an ionic compound.

B The compound is formed by covalent bonds.

C The compound dissolve in water.

D The compound is formed by electron transfer.

20 Which of the following factors influence the products of electrolysis?I Concentration of electrolyteII Type of electrodeIII Position of ion in the electrochemical seriesIV The solubility of the ions in waterA IV onlyB I and III onlyC II and IV onlyD I, II and III only

21 Table 3 shows some of the steps for preparing a standard solution but they are not in order.

P -Dissolve the solute in distilled waterS -Transfer the solution into a volumetric flaskQ -Add distilled water until the mark of the flaskR -Weigh the mass of the solute needed

Table 3Which of the following sequence of steps is correct?A P Q R SB R P S QC R P Q SD R Q P S

22 Which pairs of substances are suitable to prepare copper(II) sulphate in the laboratory?I Copper and dilute suphuric acidII Copper(II) carbonate and dilute sulphuric acidIII Aqueous copper(II) nitrate solution and dilute sulphuric acidIV Copper(II) hydroxide and sulphuric acid

A I and II onlyB I and III onlyC II and IV onlyD I, II and III only

23 Diagram 5 shows the atomic symbol of element X.

Diagram 5 Which of the following is true about element X?Proton numberNucleon numberElectron arrangement

A8162.6

B8162.8.6

CD16 16882.62.8.6

24 Which of the following pair of empirical formula and molecular formula is true for ethanoic acid?

Empirical Formula Molecular Formula

A CH2O CH2OB CH2O C2H4O2C C2H4O2 CH2OD C2H4O2 C2H4O2

25 Two elements P and Q have proton numbers of 6 and 17 respectively. Which of the following formulae and type of bond is true for the compound formed between elements P and Q? Formula Types of bond

AP4Q7Ionic bond

BP7Q4Covalent bond

C P4QIonic bond

D PQ4Covalent bond

26 Diagram 6 shows the set-up of the apparatus to prevent the iron spoon from rusting.

Silver plate Iron spoon

Silver nitrate solution

Diagram 6

What is the process involved? A Extraction

BPurification

CElectroplating

D Neutralization

27 Which of the following shows a precipitation reaction?

A K2CO3 + Pb(NO3)2 2KNO3 + PbCO3B 2HCl + PbO PbCl2 + H2OC Na2SO4 + Mg(NO3)2 MgSO4 + 2NaNO3D NaOH + K2CO3 Na2CO3 + 2KOH

28 Table 4 shows the ions formed from elements of S,T,U and V.

ElementProton numberFormula ion

S8S2-

T9T-

U11U+

V20V2+

Table 4 Which ion has the same number of electron as one chloride ion? [Proton number of Cl = 17]

A S2-B T-C U+D V2+

29 Diagram 7 shows the apparatus for the electrolysis of molten lead(II) oxide.

Electrode XElectrode Y

Diagram 7

Which of the following half equation show the reaction occurs at electrode X and Y?Electrode XElectrode Y

A 2O2- O2 + 4e-2H+ + 2e- H2

B 4OH- O2 + 2H2O + 4e-Pb2+ + 2e- Pb

C 2O2- O2 + 4e-Pb2+ + 2e- Pb

D Pb2+ + 2e- Pb2O2- O2 + 4e-

30 Sodium and rubidium are elements of Group 1 in the Periodic Table. Which of the following statements is correct?

A Both metals form acidic oxidesB A rubidium atom has more electrons in its outermost shell than sodiumC Rubidium has higher melting point than sodiumD Rubidium reacts more vigorously with water than sodium31 Diagram 8 shows an electrolysis of dilute sulphuric acid.

carbon

Diagram 8

What is gas X ?

A Carbon dioxideB HydrogenC OxygenD Sulphur dioxide32 Diagram 9 show the set-up of the apparatus for displacement reaction on test tube X,Y and Z.

Lead(II) nitrateIron(II) sulphate

TinCopper

Q P

Magnesium nitrateCopper(II) sulphate

AluminiumZinc

S RDiagram 9In which of the follwing test tubes the replacement reaction occurs?

A PB Q C RD S

33 Diagram 10 shows the industrial preparation of sulphuric acid through the Contact Process. I II III IV S SO2 SO3 H2S2O7 H2SO4 oxygen oxygen concentrated H2SO4 water Diagram 10Which stage involves the use of a catalyst?A IB IIC IIID IV

34 Which of the following reactions does not show the role of benzoic acids as an acid?A The burning of benzoic acid to produce carbon dioxide and waterB The reaction that occurs between benzoic acid and sodium hydroxide to produce salt and waterC The reaction that occurs between benzoic acid and limestone to produce carbon dioxideD The reaction that occurs between benzoic acid and magnesium ribbon to produce hydrogen

35 The pie chart in Diagram 11 shows the composition of stainless steel.

Diagram 11

What is element X?

A TinB CopperC IronD Aluminium

36 Compound with formula Y(NO3)2 has a relative formula mass of 148. What is the relative atomic mass of Y? [Relative atomic mass of N= 14, O= 16] A 24 B 56 C 38 D 86

37 Table 5 describe the composition of an atom Y.

12 neutral subatomic particle12 positively charge subatomic particle12 negatively charge subatomic particle

Table 5

Which one of the following statements about an atom Y is true?

A The nucleon number is 24.B The symbol of an atom Y is .C The total number of protons and neutrons is 12.D The number of neutrons and electrons are not the same.

38 If the formula of the sulphate salt of M is M2(SO4)3, what is the formula of the chloride salt of M?

A MClB MCl3C M2Cl3D M3Cl

39 Diagram 12 shows the atomic structure for atoms of two elements, X and Y.

X Y Diagram 12 When these two elements react to form a compound, what is the relative molecular mass of the compound? A74

B83

C117

D152

40 Diagram 6 shows the pH values of five different solutions.

WVYX

pH = 12pH = 8pH = 4pH = 1

Diagram 13

Which of the solutions has the highest concentration of hydrogen ions?

A VB W C X D Y

41 Diagram 14 shows the electron arrangement for an ion of element J.

2-J

Diagram 14

What are the number of protons and electrons in an atom of element J? Number of protonsNumber of electrons

A2020

B2018

C1618

D1616

42 Ascorbic acid contains 40.92% carbon, 4.58% hydrogen and 54.50% oxygen. What is the empirical formula for ascorbic acid? [Relative atomic mass: H = 1, C = 12, O = 16]

A CHOB CH2OC C2H3O2D C3H4O3

43 If 150 cm3 of a 4 mol dm3 solution Y is added to 250 cm3 of water, what is the molarity of the diluted solution?

A 1.50 mol dm3

B 2.40 mol dm3

C 2.80 mol dm3

D 3.00 mol dm3

44 Which of the following substances used by a farmer to neutralize an acidic soil?

A Calcium oxideB Sulphuric acidC Sodium hydroxideD Ammonium hydroxide

45 The equation below represents a chemical reaction.

xFe (s) + yO2 (g) zFe2O3(s)

What are the values of x, y and z?xyz

A123

B243

C342

D432

46 The equation shows a decomposition reaction of copper(II) nitrate.

2Cu(NO3)2 2CuO + 4NO2 + O2 What is the number of oxygen molecules is produced when 9.4 g copper(II) nitrate is heated.[Relative formula mass of Cu(NO3)2 = 188 ; Avogadro constant = 6.02 1023 mol-1]

A 1.505 1022B 3.010 1022C 1.505 1023D 3.010 1023

47 Element X, Y and Z are located in Period 3 of the Periodic Table. Table 6 below shows the properties of the oxide of element X, Y and Z.

ElementProperty of the oxide formed

XBase oxide

YAcidic oxide

ZAmphoteric oxide

Table 6What is the correct arrangement of element X, Y and Z from left to right in Period 3 of the Periodic Table?A Z, X, YB X, Z, YC X, Y, ZD Y, Z, X ElectrodesVoltage / VNegative terminal

W/X2.7W

X/Y2.0Y

Y/Z0.5Y

48Table 7 shows the voltage reading of three simple chemical cells.

Table 7 What is the voltage produced by using Z and W electrodes? A 1.5 V

B 1.2 V

C 0.8 V

D 0.6 V

49 Table 8 shows the electrical conductivity of three substances in solid and molten states. Substance Electrical conductivity in

Solid stateMolten state

P

QX

RXX

Table 8What are the likely substances for P, Q and R ? P Q R

A CopperSodium chlorideEthanol

BSodium chlorideIronEthanol

CEthanolLeadSodium chloride

DZinc oxideSodium chlorideGlucose

50 Diagram 15 shows the setup of apparatus for the titration of potassium hydroxide solution with sulphuric acid.

Sulphuric acid 1.0 mol dm-3

25 cm3 of potassium hydroxide solution 1.0 mol dm-3 and phenolphthalein as an indicator

Diagram 15What is the volume of sulphuric acid at the end point of the titration?A 10 cm3B 25 cm3C 30 cm3D 50 cm3

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