Year 10 Chemistry Paper (Multiple Choice)
Name
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Time: 45 minutes
Additional materials:
You will need:
Ruler
Calculator
Multiple choice answer sheet
Soft clean eraser
Soft pencil (type B or HB is recommended)
INSTRUCTIONS
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There are forty questions on this paper. Answer all questions.
For each question there are four possible answers A, B, C and D. Choose the one
you consider correct and record your choice in soft pencil on the multiple-choice
answer sheet.
Follow the instructions on the multiple-choice answer sheet.
Write in soft pencil.
Write your name, centre number and candidate number on the multiple-choice
answer sheet in the spaces provided unless this has been done for you.
Do not use correction fluid.
Do not write on any bar codes.
You may use a calculator.
INFORMATION
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The total mark for this paper is 40.
Each correct answer will score one mark.
Any rough working should be done on this question paper.
The Periodic Table is printed in the question paper
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1. Which change of state is an exothermic process?
A condensation
B evaporation
C melting
D sublimation
2. An isotope of chromium is represented by:
Atomic number
Mass number
Chromium
24
52
Which statement about an atom of this isotope of chromium is correct?
A It contains 24 electrons.
B It contains 24 neutrons.
C It contains 28 protons.
D It contains 52 neutrons.
3. Sodium is in Group I of the Periodic Table and chlorine is in Group VII. Which row
describes what happens when sodium bonds ionically with chlorine?
sodium atoms ion formed chlorine atoms ion formed
A Sodium atoms gain an electron to form Na- while chlorine atoms lose an electron Cl+
B Sodium atoms gain an electron to form Na+ while chlorine atoms lose an electron ClC Sodium atoms lose an electron to form Na- while chlorine atoms gain an electron Cl+
D Sodium atoms lose an electron to form Na+ while chlorine atoms gain an electron Cl4. Caesium fluoride is an ionic compound. Which statements about caesium fluoride are
correct?
1 It conducts electricity when solid.
2 It has a high melting point.
3 It is soluble in water.
4 It is highly volatile.
A 1 and 2
B 1 and 4
C 2 and 3
D 3 and 4
5. Molten sodium chloride and concentrated aqueous sodium chloride are electrolysed
using platinum electrodes. What are the products at the negative electrode (cathode) in
each electrolysis?
Molten Sodium Chloride
A
B
C
D
Hydrogen
Hydrogen
Sodium
Sodium
Concentrated aqueous Sodium
Chloride
Hydrogen
Sodium
Hydrogen
Sodium
2
6. An object is electroplated with silver using an aqueous silver salt as the electrolyte.
Which row is correct?
A
B
C
D
The Object to be electroplated is
the
Anode
Anode
Cathode
Cathode
The other electrode is made from
Carbon
Silver
Carbon
silver
7. Which statement explains why metals conduct electricity when solid?
A They have atoms which are free to move.
B They have electrons which are free to move.
C They have molecules which are free to move.
D They have positive ions which are free to move.
8. Which description of brass is correct?
A alloy
B compound
C element
D non-metal
9. The formula of an aluminium ion is Al3+. What is the formula of aluminium sulfate?
A Al2SO4
B Al(SO4) 2 C Al2(SO4)3 D Al3(SO4)2
10. Which row describes the arrangement and movement of particles in a liquid?
A
B
C
D
arrangement of particles
touching and regular
touching and random
touching and regular
touching and random
movement of particles
Vibrating
moving around each other
moving around each other
moving very fast
11. Which statement about paper chromatography is correct?
A A solvent is needed to dissolve the paper.
B Paper chromatography separates mixtures of solvents.
C The solvent should cover the baseline.
D The baseline should be drawn in pencil
12. Which formula is that of an alkene?
A C2H6
B C3H6
C C3H8
D C4H10
13. A covalent molecule Q contains only six shared electrons. What is Q?
A ammonia, NH3
B chlorine, Cl2
C methane, CH4
D water, H2O
14. Element X has 7 protons. Element Y has 8 more protons than X. Which statement
about element Y is correct?
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A Y has more electron shells than X.
B Y has more electrons in its outer shell than X.
C Y is in a different group of the Periodic Table from X.
D Y is in the same period of the Periodic Table as X
15. Which row describes what happens to the particles in solid iodine when it is heated
and turned into a gas?
A
B
C
D
Separation of particles
Closer
Closer
Further
Further
Speed of particles
together faster
together slower
apart faster
apart slower
16. Which row describes how an ionic bond forms between a sodium atom and a chlorine
atom?
A
B
C
D
Sodium atom
two electrons are lost
one electron is gained
two electrons are gained
one electron is lost
Chlorine atom
two electrons are gained
one electron is lost
two electrons are lost
one electron is gained
17. What is the relative formula mass of magnesium nitrate, Mg(NO3)2?
A 74
B 86
C 134
D 148
18. In separate experiments, electricity was passed through concentrated aqueous sodium
chloride and molten lead (II) bromide. What would happen in both experiments?
A A halogen would be formed at the anode.
B A metal would be formed at the cathode.
C Hydrogen would be formed at the anode.
D Hydrogen would be formed at the cathode.
19. Which gas has the fastest rate of diffusion?
A H2
B CH4
C CO2
D SO2
20. Element X is in Group II of the Periodic Table. Which statements about X are correct?
1 X is a metal.
2 X has two electrons in its outer shell.
3 X is a liquid at room temperature.
A 1 and 2 only B 1 and 3 only
C 2 and 3 only
21. Why is helium used to fill balloons?
A Helium is monoatomic.
B Helium is in Group VIII of the Periodic Table.
C Helium has a full outer electron shell.
D Helium is less dense than air.
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D 1, 2 and 3
22. Which substances can be separated by filtration?
A insoluble liquid and water
B insoluble solid and water
C solution of soluble liquid in water
D solution of soluble solid in water
23. Concentrated aqueous sodium chloride is electrolysed using platinum electrodes.
What is the major product formed at each electrode?
A
B
C
D
Anode
Chlorine
Chlorine
Oxygen
Oxygen
Cathode
Hydrogen
Sodium
Hydrogen
Sodium
24. A flammable gas needs to be removed from a tank at an industrial plant. For safety
reasons, an inert gas is used. Which gas is suitable?
A argon
B hydrogen
C methane
D oxygen
25. Which method of separation is used to separate a soluble solid from its solution?
A chromatography
B condensation
C crystallisation
D filtration
26. Which statement about alkane molecules is correct?
A They burn in oxygen.
B They contain carbon, hydrogen and oxygen atoms.
C They contain double bonds.
D They contain ionic bonds.
27. What is the formula of propane?
A C2H8
B C3H7
C C3H8
D C3H9
28. The atomic number and Mass number of a potassium atom are shown.
atomic number
Mass number
potassium
atom
19
39
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How many protons, neutrons and electrons are in a potassium ion, K+?
A
B
C
D
Protons
19
19
20
20
Neutrons
20
20
19
19
Electrons
18
20
18
19
29. The electronic structures of two atoms, P and Q, are shown. P has 9 electrons while Q
has 3 electrons. P and Q combine together to form a compound. What is the type of
bonding in the compound and what is the formula of the compound?
A
B
C
D
type of bonding
Ionic
Ionic
Covalent
Covalent
formula
PQ
PQ2
PQ2
PQ
30. Which equation represents incomplete combustion of ethane?
A C2H6 + O2 → 2CO + 3H2
B C2H6 + 2O2 → 2CO2 + 3H2
C 2C2H6 + 5O2 → 4CO + 3H2O
D 2C2H6 + 7O2 → 4CO + 6H2O
31. Which process involves a physical change?
A heating calcium carbonate
B burning wood
C melting an ice cube
D mixing an acid and a base
32. Compound Q decolourises bromine water. Compound Q has two carbon atoms in
each molecule. Which statement about compound Q is correct?
A It contains carbon-hydrogen double bonds.
B It has six hydrogen atoms per molecule.
C It has two carbon-carbon double bonds.
D It is produced by cracking alkanes.
33. Rubidium is in Group I of the Periodic Table and bromine is in Group VII.
Rubidium reacts with bromine to form an ionic compound. Which row shows the
electron change taking place for rubidium and the correct formula of the
rubidium ion?
A
B
C
D
electron change
electron gained
electron gained
electron lost
electron lost
formula of ion formed
Rb+
RbRb+
Rb-
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34. Carbon reacts with silver oxide to form carbon dioxide and silver.
Which substance is reduced?
A carbon
B carbon dioxide
C silver
D silver oxide
35. Which reaction is used as a test for alkenes?
A Alkenes burn in air to give carbon dioxide and water.
B Alkenes decolourise aqueous bromine.
C Alkenes form polymers when heated in the presence of a catalyst.
D Alkenes react with steam to form alcohols.
36. Lithium reacts with fluorine to form the compound lithium fluoride. Which statement
about this reaction is correct?
A Each fluorine atom gains one electron.
B Each fluorine atom gains two or more electrons.
C Each fluorine atom loses one electron.
D Each fluorine atom loses two or more electrons.
37. Alcohol and water are completely miscible. This means when mixed together they form
only one liquid layer. Which method is used to separate alcohol from water?
A crystallisation
B filtration
C fractional distillation
D precipitation
38. A mixture of ethanol and methanol are separated by fractional distillation. This method
of separation depends on a difference in property X of these two alcohols. What is
property X?
A boiling point
B colour
C melting point
D solubility
39. A fruit drink coloured orange contains a dissolved mixture of red and yellow colouring
agents. One of these colouring agents is suspected of being illegal. Which method
could be used to show the presence of this illegal colouring agent?
A chromatography
B distillation
C evaporation
D filtration
40. A student separates salt from a mixture of salt and sand. What is the correct order of
steps for the student to take?
A filter → evaporate → shake with water
B filter → shake with water → evaporate
C shake with water → evaporate → filter
D shake with water → filter → evaporate
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END OF QUESTION PAPER
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