Cambridge IGCSE Chemistry (9-1) 0971 — 2020 May/June Paper 1 · Variant 1

Question 1

1 Nitrogen is heated in a balloon, which expands slightly. Which statements about the molecules of nitrogen are correct? 1 They move further apart. 2 They move more quickly. 3 They remain the same distance apart. 4 Their speed remains unchanged. A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

Accepted Answer

A

Question 2

2 Which piece of apparatus should be used to measure exactly 21.4 cm3 of water? A 25 cm3 beaker B 25 cm3 pipette C 50 cm3 burette D 50 cm3 measuring cylinder

Accepted Answer

C

Question 3

3 Which method of separation is used to separate a soluble solid from its solution? A chromatography B condensation C crystallisation D filtration

Accepted Answer

C

Question 4

4 The atomic number and nucleon number of a potassium atom are shown. potassium atom atomic number 19 nucleon number 39 How many protons, neutrons and electrons are in a potassium ion, K+? protons neutrons electrons A 19 20 18 B 19 20 20 C 20 19 18 D 20 19 19

Accepted Answer

A

Question 5

5 Sodium is in Group I of the Periodic Table. Chlorine is in Group VII of the Periodic Table. Sodium and chlorine combine to form a compound. Which statement about the combination of sodium and chlorine atoms is correct? A Both sodium and chlorine lose electrons. B Both sodium and chlorine gain electrons. C Sodium loses electrons and chlorine gains electrons. D Sodium gains electrons and chlorine loses electrons.

Accepted Answer

C

Question 6

6 The electronic structures of two atoms, P and Q, are shown. P Q 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? type of bonding formula A ionic PQ B ionic PQ2 C covalent PQ2 D covalent PQ

Accepted Answer

A

Question 7

7 The structures of diamond and graphite are shown. Which statement about diamond and graphite is correct? A Diamond and graphite have low melting points. B Diamond and graphite have mobile electrons. C Diamond and graphite have layered structures. D Diamond and graphite contain strong covalent bonds between carbon atoms.

Accepted Answer

D

Question 8

8 Aluminium oxide has the formula Al 2O3. Which statement about aluminium oxide is correct? A 2 g of aluminium atoms are combined with 3 g of oxygen atoms. B 2 g of aluminium atoms are combined with 3 g of oxygen molecules. C Aluminium oxide has a relative formula mass of 102. D Pure aluminium oxide contains a higher mass of oxygen than of aluminium.

Accepted Answer

C

Question 9

9 Which products are formed when dilute sulfuric acid undergoes electrolysis? at the anode at the cathode A oxygen hydrogen B hydrogen oxygen C sulfur dioxide hydrogen D oxygen sulfur dioxide

Accepted Answer

A

Question 10

10 Which element is not used as a fuel? A carbon B helium C hydrogen D uranium

Accepted Answer

B

Question 11

11 The energy level diagram shows the energy of the reactants and products in a chemical reaction. reactants energy products progress of reaction Which row correctly describes the energy change and the type of reaction shown? description of type of reaction energy change A energy is given out endothermic to the surroundings B energy is given out exothermic to the surroundings C energy is taken in from endothermic the surroundings D energy is taken in from exothermic the surroundings

Accepted Answer

B

Question 12

12 Which diagram represents a chemical change? A B C D

Accepted Answer

D

Question 13

13 The rate of reaction between magnesium and hydrochloric acid is investigated. The volume of hydrogen given off at different times is measured. The results are shown. 25 20 volume of 15 hydrogen / cm3 10 5 0 0 10 20 30 40 50 60 70 80 90 100 time / s Which conclusions are correct? 1 The rate is fastest between 0 and 20 seconds. 2 The maximum volume of hydrogen given off is 22 cm3. 3 At 40 seconds, 20 cm3 of hydrogen is given off. A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3

Accepted Answer

A

Question 14

14 Which reaction can be easily reversed? A dissolving zinc in hydrochloric acid B fermenting glucose with yeast C heating hydrated cobalt(II) chloride D the rusting of an iron nail

Accepted Answer

C

Question 15

15 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

Accepted Answer

D

Question 16

16 The graph shows how the pH of a solution changes as an acid is added to an alkali. acid  +  alkali  →  salt  +  water Which letter represents the area of the graph where both acid and salt are present? A 14 B C pH 7 D 0 volume of acid added

Accepted Answer

D

Question 17

17 Phosphorus is an element in Group V of the Periodic Table.
It burns in air to form an oxide, which dissolves in water to form a solution with a pH of 1.

Which row describes this oxide of phosphorus?

metal non-metal acidic basic
oxide oxide oxide oxide
A v x Jv x
B J x x Jv
Cc x J Jv x
D x Jv x JV

Accepted Answer

C

Question 18

18 The apparatus shown is used to prepare aqueous copper(II) sulfate. filter paper stirrer excess of solid X solid X Y aqueous copper(II) sulfate heat What are X and Y? X Y A copper aqueous iron(II) sulfate B copper(II) chloride dilute sulfuric acid C copper(II) oxide dilute sulfuric acid D sulfur aqueous copper(II) chloride

Accepted Answer

C

Question 19

19 Two tests are carried out on substance Z. test 1 A flame test produces a red flame. test 2 Z is dissolved in water and dilute nitric acid is added, followed by aqueous silver nitrate. A yellow precipitate is produced. What is substance Z? A lithium bromide B lithium iodide C sodium bromide D sodium iodide

Accepted Answer

B

Question 20

20 The elements in Period 3 of the Periodic Table are shown. Na Mg Al Si P S Cl Ar Which statements about the elements in Period 3 are correct? 1 Na, Mg and Al are metals. 2 S, Cl and Ar are non-metals. 3 Si, P and S are metals. A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3

Accepted Answer

A

Question 21

21 A Group I metal (lithium, sodium or potassium) is reacted with a Group VII element (chlorine, bromine or iodine). Which compound is formed when the Group I metal of highest density reacts with the Group VII element of lowest density? A lithium chloride B potassium chloride C potassium iodide D lithium iodide

Accepted Answer

B

Question 22

22 The properties of the element titanium, Ti, can be predicted from its position in the Periodic Table.

Which row identifies the properties of titanium?

forms coloured
compounds

can be used conducts electricity
as a catalyst when solid

has low density

v v x

v v v
v x v
x v v

Accepted Answer

B

Question 23

23 A balloon is filled with helium. Helium is a noble gas and makes the balloon rise up in the air. The density of air is 1.23 g / dm3. Which gas is helium? density in g / dm3 reaction with oxygen A 0.0899 burns rapidly B 0.179 does not react with oxygen C 1.78 does not react with oxygen D 3.75 does not react with oxygen

Accepted Answer

B

Question 24

24 Which property is shown by all metals? A They are extracted from their ores by heating with carbon. B They conduct electricity. C They form acidic oxides. D They react with hydrochloric acid to form hydrogen.

Accepted Answer

B

Question 25

25 The properties of four metals, W, X, Y and Z, are shown. W It does not react with cold water but reacts with steam. X It does not react with water or dilute acid but the oxide of X is reduced by carbon. Y The oxide of Y is not reduced by carbon but Y reacts vigorously with cold water. Z It does not react with water or steam but reacts with dilute acid. What is the order of reactivity of the elements starting with the most reactive? most least reactive reactive A X W Z Y B X Z W Y C Y W Z X D Y Z W X

Accepted Answer

C

Question 26

26 Molten iron from the blast furnace contains impurities. The process of turning the impure iron into steel involves blowing oxygen into the molten iron and adding calcium oxide. What are the reasons for blowing in oxygen and adding calcium oxide? blowing in oxygen adding calcium oxide A carbon is removed by reacting with oxygen reacts with acidic impurities making slag B carbon is removed by reacting with oxygen reacts with slag and so removes it C iron reacts with the oxygen reacts with acidic impurities making slag D iron reacts with the oxygen reacts with slag and so removes it

Accepted Answer

A

Question 27

27 Which row describes two uses of the named steel? type of steel uses A mild steel cutlery and car bodies B mild steel car bodies and chemical plant C stainless steel cutlery and chemical plant D stainless steel car bodies and cutlery

Accepted Answer

C

Question 28

28 Which statement shows that a liquid is pure water? A It boils at 100 °C. B It has a pH value of 7. C It turns blue cobalt(II) chloride pink. D It turns white copper(II) sulfate blue.

Accepted Answer

A

Question 29

29 Some gases are present in clean air while other gases are only present in polluted air. Which row is correct? a gas present a gas only present in clean air in polluted air A argon carbon dioxide B argon nitrogen dioxide C sulfur dioxide carbon dioxide D sulfur dioxide nitrogen dioxide

Accepted Answer

B

Question 30

30 The diagrams show experiments to investigate rusting of iron nails. 1 2 3 layer of oil tap salt boiled water water water In which test-tubes do the nails rust? A 1 only B 1 and 2 only C 1 and 3 only D 1, 2 and 3

Accepted Answer

B

Question 31

31 Which mixture contains all of the elements in a typical fertiliser? A ammonium nitrate and calcium phosphate B ammonium phosphate and potassium chloride C potassium nitrate and ammonium chloride D potassium carbonate and ammonium nitrate

Accepted Answer

B

Question 32

32 Which processes produce methane? 1 complete combustion of carbon-containing compounds 2 decomposition of vegetation 3 digestion in animals 4 respiration in animals A 1 and 4 B 1 and 3 C 2 and 3 D 2 and 4

Accepted Answer

C

Question 33

33 The list shows four methods that were suggested for the formation of carbon dioxide. 1 cracking methane using steam 2 action of heat on a carbonate 3 complete combustion of methane 4 reaction of a carbonate with oxygen Which methods would result in the production of carbon dioxide? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

Accepted Answer

C

Question 34

34 A student suggests three uses of calcium carbonate (limestone). 1 manufacture of cement 2 manufacture of iron 3 treating alkaline soils Which suggestions are correct? A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3

Accepted Answer

A

Question 35

35 Which list shows the fractions obtained from distilling petroleum, in order of increasing boiling point? A bitumen → diesel oil → fuel oil → lubricating oil B diesel oil → gasoline → naphtha → kerosene C gasoline → naphtha → kerosene → diesel oil D kerosene → lubricating oil → naphtha → refinery gas

Accepted Answer

C

Question 36

36 Which statement about members of a homologous series is correct? A They are elements with the same chemical properties. B They are compounds with the same functional group. C They are atoms with the same number of outer electrons. D They are molecules with the same boiling point.

Accepted Answer

B

Question 37

37 Increasing the number of atoms in one molecule of a hydrocarbon increases the amount of energy released when it burns. What is the correct order? less energy more energy released released A ethene ethane methane B ethene methane ethane C methane ethane ethene D methane ethene ethane

Accepted Answer

D

Question 38

38 Which statements about ethanol are correct? 1 Ethanol is made by reacting steam with ethene at 300 °C. 2 Ethanol is made by fermentation at 55 °C. 3 Ethanol burns to produce carbon dioxide and water. 4 Ethanol contains a carbon-carbon double bond. A 1 and 2 B 1 and 3 C 2 and 3 D 3 and 4

Accepted Answer

B

Question 39

39 Some properties of an organic compound J are listed. ● It is a liquid at room temperature. ● It is soluble in water. ● A solution of J reacts with calcium carbonate to form carbon dioxide. ● A solution of J has a pH of 3. In which homologous series does J belong? A alkane B alkene C alcohol D carboxylic acid

Accepted Answer

D

Question 40

40 Which polymers or types of polymer are synthetic? 1 carbohydrates 2 nylon 3 proteins 4 Terylene A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

Accepted Answer

D

Question paper16 pages

Mark scheme3 pages

Questions as text

Q1 · Nitrogen is heated in a balloon, which expands slightly

Q2 · Which piece of apparatus should be used to measure exactly 21.4 cm3 of water?

Q3 · Which method of separation is used to separate a soluble solid from its solution?

Q4 · The atomic number and nucleon number of a potassium atom are shown

Q5 · Sodium is in Group I of the Periodic Table

Q6 · The electronic structures of two atoms, P and Q, are shown

Q7 · The structures of diamond and graphite are shown

Q8 · Aluminium oxide has the formula Al 2O3

Q9 · Which products are formed when dilute sulfuric acid undergoes electrolysis?

Q10 · Which element is not used as a fuel?

Q11 · The energy level diagram shows the energy of the reactants and products in a chemical…

Q12 · Which diagram represents a chemical change?

Q13 · The rate of reaction between magnesium and hydrochloric acid is investigated

Q14 · Which reaction can be easily reversed?

Q15 · Carbon reacts with silver oxide to form carbon dioxide and silver

Q16 · The graph shows how the pH of a solution changes as an acid is added to an alkali

Q17 · Phosphorus is an element in Group V of the Periodic Table

Q18 · The apparatus shown is used to prepare aqueous copper(II) sulfate

Q19 · Two tests are carried out on substance Z

Q20 · The elements in Period 3 of the Periodic Table are shown

Q21 · A Group I metal (lithium, sodium or potassium) is reacted with a Group VII element…

Q22 · The properties of the element titanium, Ti, can be predicted from its position in the…

Q23 · A balloon is filled with helium

Q24 · Which property is shown by all metals?

Q25 · The properties of four metals, W, X, Y and Z, are shown

Q26 · Molten iron from the blast furnace contains impurities

Q27 · Which row describes two uses of the named steel?

Q28 · Which statement shows that a liquid is pure water?

Q29 · Some gases are present in clean air while other gases are only present in polluted air

Q30 · The diagrams show experiments to investigate rusting of iron nails

Q31 · Which mixture contains all of the elements in a typical fertiliser?

Q32 · Which processes produce methane?

Q33 · The list shows four methods that were suggested for the formation of carbon dioxide

Q34 · A student suggests three uses of calcium carbonate (limestone)

Q35 · Which list shows the fractions obtained from distilling petroleum, in order of increasing…

Q36 · Which statement about members of a homologous series is correct?

Q37 · Increasing the number of atoms in one molecule of a hydrocarbon increases the amount of…

Q38 · Which statements about ethanol are correct?

Q39 · Some properties of an organic compound J are listed

Q40 · Which polymers or types of polymer are synthetic?

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