spm past year chemistry paper 1 (2010)
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  • Question 1
    60 seconds
    Q.

    What is the meaning of isotopes?

    answer choices

    Atoms of the same element with the same nucleon number

    Atoms of the same elements with different number of neutrons

    Atoms of different elements with different proton numbers

    Atoms of different elements with the same nucleon number

  • Question 2
    60 seconds
    Q.

    The proton number of atom R is 14 and its relative atomic mass is 28. Which statement is correct?

    answer choices

    Mass of 1 atom of R is 28 g

    Molar mass of R is 28g mol-1

    14 g of R contains 6.0 X 1023 atoms

    Atom R has 14 protons, 14 electrons and 28 neutrons

  • Question 3
    60 seconds
    Q.

    What are the reactants in this equation?

    Cu(OH)2 + 2HNO3 → Cu(NO3)2 + 2H2O

    answer choices

    Copper(II) nitrate and water

    Copper(II) nitrate and nitric acid

    Copper(II) hydroxide and nitric acid

    Copper(II) hydroxide and copper(II) nitrate

  • Question 4
    60 seconds
    Q.

    Element M and element L are located in Group 1 and Group 17 respectively. Element M react with element L to form a compund.

    answer choices

    ML

    ML2

    M2L

    M2L3

  • Question 5
    60 seconds
    Q.

    Element J and element Q have proton number of 12 and 9 respectively.

    What is the relative formula mass(RAM) of a compound formed between J and Q?

    (RAM: J=24; Q=19)

    answer choices

    30

    43

    62

    17

  • Question 6
    60 seconds
    Q.

    An oxide of element X has the empirical formula of X2O. 2.24 g of element X reacts completely with 0.96 g of oxygen. What is the relative atomic mass(RAM) of X?

    (RAM: O=16)

    answer choices

    112

    56

    25

    17

  • Question 7
    60 seconds
    Q.

    Equation: 2H2O2 →> 2H2o + O2

    What is the volume of O2 produced from the decomposition of 500cm3 of 2 mol dm-3 hydrogen peroxide at standard temperature and pressure(STP)?

    (Molar volume of gas at STP = 22.4 dm-3 mol-1 )

    answer choices

    11.2 dm3

    22.4 dm3

    33.6 dm3

    44.8 dm3

  • Question 8
    60 seconds
    Q.

    Metal X has the following properties.

    -Less reactive than iron

    -Does not react with iron(II) oxide

    Which metal oxide can react with X?

    answer choices

    Zinc oxide

    Magnesium oxide

    Copper(II) oxide

    Aluminium oxide

  • Question 9
    60 seconds
    Q.

    Which statement explains why the reactivity of Group 1 elements when going down the group?

    answer choices

    The physical state of the elements changes from gas to liquid then to solid at room temperature

    The attractive force between valence electron and the nucleus becomes stronger

    The valence electron gets further away from the nucleus

    The melting points of the elements decrease

  • Question 10
    60 seconds
    Q.

    Some transition elements and their compounds are useful catalysts in industry. Which pair is correct?

    answer choices

    Iron (Manufacture of nitric acid from ammonia)

    Nickel (Manufacture of ammonia)

    Manganese(IV) oxide (Manufacture of margarine)

    Vanadium(V) oxide (Manufacture of sulphuric acid)

  • Question 11
    60 seconds
    Q.

    How does a catalyst increase the rate of reaction?

    answer choices

    Increase the number of effective collisions

    Increase the activation energy of the reaction

    Increase the total number of reactant particles

    Increase the kinetic energy of reactant particles

  • Question 12
    60 seconds
    Q.

    Solid X is heated in a boiling tube and the temperature is recorded at regular time intervals. If the melting point of X is 78 oC, which graph represents the heating curve of curve X?

    answer choices
  • Question 13
    60 seconds
    Q.

    Diagram below shows an air ballon filled with gas X.

    In which group is X located in the Periodic Table?

    answer choices

    Group 15

    Group 16

    Group 17

    Group 18

  • Question 14
    60 seconds
    Q.

    Table above shows the properties of oxides of elements P,Q and R and located in the same period in the Period Table. Arrange the three elements based on the increasing of proton number.

    answer choices

    R,Q,P

    R,P,Q

    Q,P,R

    Q,R,P

  • Question 15
    60 seconds
    Q.

    The electron arrangement of atom U is 2.8.1 and atom V is atom 2.8.7. What is the molar mass of a compound formed when atom U combine with atom V?

    (RAM: U=23; V=35.5)

    answer choices

    152.5 g mol-1

    94.0 g mol-1

    81.5 g mol-1

    58.5 g mol-1

  • Question 16
    60 seconds
    Q.

    Which substances is a covalent compound?

    answer choices

    Phosphorus(V) oxide

    Sodium sulphate

    Magnesium chloride

    Lead (II) bromide

  • Question 17
    60 seconds
    Q.

    Which diagram shows the electron arrangement for the nitrogen molecule, N2 ?

    answer choices
  • Question 18
    60 seconds
    Q.

    Compound X has the following properties.

    -Insoluble in water

    -Has a boiling point of -89 oC

    What is compund X?

    answer choices

    Ethane

    Ethanol

    Ethanoic acid

    Ethyl etanoate

  • Question 19
    60 seconds
    Q.

    Table above shows the electron arrangements of atoms P,Q,R and S. Which pair of atoms forms a compound by sharing electron?

    answer choices

    P and S

    P and R

    Q and S

    Q and R

  • Question 20
    60 seconds
    Q.

    Table above shows information about three voltaic cells. Metals X,Y and Z are used as electrodes in the cell.

    What is the order of the metals from the most electropositive to the least electropositive?

    answer choices

    X,Y,Z

    X,Z,Y

    Y,Z,X

    Z,X,Y

  • Question 21
    60 seconds
    Q.

    What is the voltmeter reading when Pand Q are the pair of metals used as electrodes?

    answer choices

    0.1 V

    0.5 V

    1.7 V

    2.3 V

  • Question 22
    60 seconds
    Q.

    Which electrolyte and electrodes can be used to purify copper

    answer choices
  • Question 23
    60 seconds
    Q.

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

    answer choices

    X is a weak acid

    X is a strong akali

    X dissociates partially in water

    X has a high concentration of hydrogen ions

  • Question 24
    60 seconds
    Q.

    Which of the following is not a chemical property of acids?

    answer choices

    Reacts with carbonate to produce salt, water and carbon dioxide

    Reacts with reactive metal to produce salt and hydrogen

    Reacts with metal oxide to produce salt and water

    Reacts with alkali to produce salt and hydrogen

  • Question 25
    60 seconds
    Q.

    A farmer found that his soil is too acidic for some plants to grow well. Which substance is suitable to reduce the acidity of the soil?

    answer choices

    Barium chloride

    Calcium oxide

    Sodium nitrite

    Potassium iodide

  • Question 26
    60 seconds
    Q.

    The following equation represents the neutralisation between barium hydroxide, Ba(OH)2 and hydrochloric acid, HCl.

    Ba(OH)2 + 2HCl → BaCl2 + 2H2O

    What is the volume of 0.5mol dm-3 hydrochloric acid needed to neutralise 25cm3 of 0.1mol dm-3 barium hydroxide?

    answer choices

    2.5 cm3

    5.0 cm3

    10.0 cm3

    12.5 cm3

  • Question 27
    60 seconds
    Q.

    Which equations represents a double decomposition reactions to form a precipitate?

    (I) CuSO4 + Na2CO2 → CuCO3 + Na2SO4

    (II) CuSO4 + Mg(NO3)2 → Cu(NO3)2 + MgSO4

    (III) AgNO3 + NaCl → AgCl + NaNO3

    (IV) ZnCl2 + Na2SO4 → ZnSO4 + 2NaCl

    answer choices

    I and II

    I and III

    II and IV

    III and IV

  • Question 28
    60 seconds
    Q.

    When the temperature of a reacting mixture increases, the rate of reaction increases. Which statement explains why the rate of reaction increases?

    answer choices

    The total surface area of reactant particles increases

    The total number of reactant particles per unit volume increases

    The reactant particles move faster and collide more often with one another

    The reactant particles which collide more often are able to overcome the lower activation energy

  • Question 29
    60 seconds
    Q.

    The following equation shows the reaction of zinc powder and hydrochloric acid.

    Zn + 2HCl → ZnCl2 + H2

    How can the rate of production of hydrogen be increased?

    answer choices

    Increase the size of the zinc

    Increase the volume of water in hydrochloric acid

    Increase the volume of hydrochloric acid

    Increase the temperature of hydrochloric acid

  • Question 30
    60 seconds
    Q.

    The following equation represents the complete combustion of a hydrocarbon.

    CXH2y + yO2 -> xCO2 + yH2O

    Which of the following are the values of x and y?

    answer choices

    x = 1, y = 2

    x = 2, y = 3

    x = 3, y = 4

    x = 4, y = 5

  • Question 31
    60 seconds
    Q.

    Which of the half equations represents the reactions at the anode(A) and the cathode(C)?

    answer choices

    A: 4OH-→ 2H2O + O2 + 4e-

    C: Fe2+ + 2e- → Fe

    A: Ag → Ag+ + e-

    C: Ag+ → Ag + e-

    A: Ag → Ag+ + e-

    C: Fe2+ + 2e- → Fe

    A: 4OH- → 2H2O + O2 + 4e-

    C: Ag → Ag+ + e-

  • Question 32
    60 seconds
    Q.

    What is X?

    answer choices

    Zinc chloride

    Zinc sulphate

    Aluinium chloride

    Aluminium sulphate

  • Question 33
    60 seconds
    Q.

    What is te rate of reaction?

    answer choices

    0.10 cm3 min-1

    7.60 cm3 min-1

    10.60 cm3 min-1

    37.40 cm3 min-1

  • Question 34
    60 seconds
    Q.

    Which structural formulae are isomers of butane?

    answer choices
  • Question 35
    60 seconds
    Q.

    What happens when natural rubbers is vulcanised?

    answer choices

    The melting point of rubber decrease

    The vulcanised rubber is less resistant to heat

    Rubber molecules slide more easily over each other

    Sulphur atoms form cross-links between rubber molecules

  • Question 36
    60 seconds
    Q.

    When but-2-ene is shaken with bromine water then decolourised. What is the product of this reaction?

    answer choices

    1,2-dibromobutene

    2,3-dibromobutene

    1,2-diromobutane

    2,3-dibromobutane

  • Question 37
    60 seconds
    Q.

    Which statement is correct about alkanes ?

    answer choices

    Undergo polymerisation reaction

    Undergo hydrogenation reaction

    Undergo substitution reaction

    Undergo hydration reaction

  • Question 38
    60 seconds
    Q.

    Which structural formula does not correspond to the named compound?

    answer choices
  • Question 39
    60 seconds
    Q.

    Which statement defines oxidation?

    answer choices

    Increase in oxidation number

    Gain of hydrogen

    Loss of oxygen

    Gain of electron

  • Question 40
    60 seconds
    Q.

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

    answer choices

    Lead

    Silver

    Copper

    Magnesium

  • Question 41
    60 seconds
    Q.

    What is the oxidation number of X in X2O32- ion?

    answer choices

    +2

    +4

    -2

    -4

  • Question 42
    60 seconds
    Q.

    Based on the equation, which statement is correct?

    answer choices

    The reaction is endothermic

    The activatio energy is 210 kJ mol-1

    The temperature of the mixture increase

    The total energy of the reactants is lower than the products

  • Question 43
    60 seconds
    Q.

    100 cm3 of water is heated by the burning of a sample of ethanol. The heat released by the combustion is 10.5 kJ. What is the maximum increase i temperature of water?

    (Specific heat capacity of water= 4.2 J g-1 oC-1)

    answer choices

    0.025 oC

    0.25 oC

    2.5 oC

    25 oC

  • Question 44
    60 seconds
    Q.

    What is meaning of heat of neutralisation?

    answer choices

    The heat absorbed when acid react with an alkali

    The heat released when acid react with alkali

    The heat of change when one mole of water is formed from the reaction between acid and alkali

    The heat of change when one mole of salt is formed from the reaction between acid and alkali

  • Question 45
    60 seconds
    Q.

    Which pair is matched correctly?

    answer choices
  • Question 46
    60 seconds
    Q.

    Ammonium sulphate is used as a fertiliser. What is the percentage by mass of nitrogen in ammonium sulphate?

    (RAM: H=1; N=14; O=16; S=32)

    answer choices

    10.6%

    12.3%

    13.3%

    21.2%

  • Question 47
    60 seconds
    Q.

    In order to produce a glass that is more resistant to heat and chemicals, substances X is added to soda lime glass.

    What is X?

    answer choices

    Boron oxide

    Lead(II) oxide

    Sodium carbonate

    Calcium carbonate

  • Question 48
    60 seconds
    Q.

    Which substances is a natural polymer?

    answer choices

    Polyethene

    Polypropene

    Polyisoprene

    Polyvinly chloride

  • Question 49
    60 seconds
    Q.

    Which substance is a composite material?

    answer choices

    Alloy

    Glass

    Ceramics

    Fibre glass

  • Question 50
    60 seconds
    Q.

    Why sodium chloride used in the preparation of soap?

    answer choices

    To speed up the reaction to produce soap?

    To produce soap which foams easily

    To reduce solubility of soap

    To make soap softer

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