Cambridge IGCSE Chemistry (9-1) 0971 — 2018 May/June Paper 1 · Variant 1
0971/11/M/J/18 · 40 questions · 40 marks · ≈45 min
The question paper and its mark scheme, free to read here and free to download. This is Cambridge’s own paper, exactly as it was sat.
Question paper16 pages
Mark scheme3 pages
Answers below. Sit the paper first if you are practising.
Questions as text
Q1 · The diagrams show particles in a container
1 The diagrams show particles in a container. 1 2 3 Which two diagrams show the process of evaporation? A 1 → 2 B 1 → 3 C 2 → 3 D 3 → 1
Mark scheme: B
Q2 · Which piece of apparatus is used to measure exactly 26.3 cm3 of a liquid?
2 Which piece of apparatus is used to measure exactly 26.3 cm3 of a liquid? A B C D
Mark scheme: A
Q3 · The melting points and boiling points of pure substances W, X and Y are shown
3 The melting points and boiling points of pure substances W, X and Y are shown. W X Y melting point / °C –114 115 –101 boiling point / °C 78 445 –34 The substances are chlorine, ethanol and sulfur. Which row identifies W, X and Y? W X Y A chlorine ethanol sulfur B ethanol sulfur chlorine C sulfur chlorine ethanol D sulfur ethanol chlorine
Mark scheme: B
Q4 · In which atom is the number of protons equal to the number of neutrons?
4 In which atom is the number of protons equal to the number of neutrons? A 40Ar B 19F C 23Na D 16O
Mark scheme: D
Q5 · Which row identifies an alloy, a pure metal and a non-metal?
5 Which row identifies an alloy, a pure metal and a non-metal? alloy pure metal non-metal A brass carbon copper B brass copper carbon C copper brass carbon D copper carbon brass
Mark scheme: B
Q6 · A covalent molecule Q contains exactly six shared electrons
6 A covalent molecule Q contains exactly six shared electrons. What is Q? A ammonia, NH3 B chlorine, Cl 2 C methane, CH4 D water, H2O
Mark scheme: A
Q7 · The ‘lead’ in a pencil is made of a mixture of graphite and clay
7 The ‘lead’ in a pencil is made of a mixture of graphite and clay. ‘lead’ When the percentage of graphite is increased, the pencil slides across the paper more easily. Which statement explains this observation? A Graphite has a high melting point. B Graphite is a form of carbon. C Graphite is a lubricant. D Graphite is a non-metal.
Mark scheme: C
Q8 · The equation for the reaction between magnesium and dilute sulfuric acid is shown
8 The equation for the reaction between magnesium and dilute sulfuric acid is shown. The Mr of MgSO4 is 120. Mg + H2SO4 → MgSO4 + H2 Which mass of magnesium sulfate is formed when 12 g of magnesium completely reacts with dilute sulfuric acid? A 5 g B 10 g C 60 g D 120 g
Mark scheme: C
Q9 · What is observed at each electrode when molten lead(II) bromide is electrolysed using…
9 What is observed at each electrode when molten lead(II) bromide is electrolysed using platinum electrodes? negative electrode positive electrode A bubbles of a colourless gas bubbles of a brown gas B bubbles of a colourless gas bubbles of a colourless gas C shiny grey liquid bubbles of a brown gas D shiny grey liquid bubbles of a colourless gas
Mark scheme: C
Q10 · Which gas is used as a fuel?
10 Which gas is used as a fuel? A argon B hydrogen C nitrogen D oxygen
Mark scheme: B
Q11 · Burning fuels is an exothermic reaction
11 Burning fuels is an exothermic reaction. What is meant by the term exothermic? A A gas is produced. B Energy is released. C Heat is absorbed. D The mass of the fuel decreases.
Mark scheme: B
Q12 · The diagram shows a rate of reaction experiment
12 The diagram shows a rate of reaction experiment. hydrogen excess dilute magnesium hydrochloric acid at 25 °C Increasing the concentration of the acid and increasing the temperature both affect the rate of reaction. Which row is correct? increase the concentration increase the temperature of acid A decrease rate of reaction decrease rate of reaction B decrease rate of reaction increase rate of reaction C increase rate of reaction decrease rate of reaction D increase rate of reaction increase rate of reaction
Mark scheme: D
Q13 · Water is added to anhydrous copper(II) sulfate
13 Water is added to anhydrous copper(II) sulfate. What happens during the reaction? A The copper(II) sulfate turns blue and the solution formed gets colder. B The copper(II) sulfate turns blue and the solution formed gets hotter. C The copper(II) sulfate turns white and the solution formed gets colder. D The copper(II) sulfate turns white and the solution formed gets hotter.
Mark scheme: B
Q14 · Which equation shows an oxidation reaction?
14 Which equation shows an oxidation reaction? A C + O2 → CO2 B CaCO3 → CaO + CO2 C CaO + 2HCl → CaCl 2 + H2O D N2O4 → 2NO2
Mark scheme: A
Q15 · Dilute nitric acid is added to a solid, F
15 Dilute nitric acid is added to a solid, F. A gas, G, is produced which is denser than air and extinguishes a burning splint. What are F and G? solid F gas G A calcium hydrogen B calcium carbonate carbon dioxide C calcium hydroxide hydrogen D calcium oxide carbon dioxide
Mark scheme: B
Q16 · Which statement about oxides is correct?
16 Which statement about oxides is correct? A A solution of magnesium oxide has a pH less than pH 7. B A solution of sulfur dioxide has a pH greater than pH 7. C Magnesium oxide reacts with nitric acid to make a salt. D Sulfur dioxide reacts with hydrochloric acid to make a salt.
Mark scheme: C
Q17 · Which methods are suitable for preparing both zinc sulfate and copper(II) sulfate?
17 Which methods are suitable for preparing both zinc sulfate and copper(II) sulfate? 1 reacting the metal oxide with warm dilute aqueous sulfuric acid 2 reacting the metal with dilute aqueous sulfuric acid 3 reacting the metal carbonate with dilute aqueous sulfuric acid A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only
Mark scheme: C
Q18 · Two salt solutions, X and Y, are tested
18 Two salt solutions, X and Y, are tested. The table shows the results. test X Y a few drops of aqueous green precipitate red-brown sodium hydroxide are added formed precipitate formed a few drops of dilute nitric acid and no change seen white precipitate a few drops of barium nitrate are added formed a few drops of dilute nitric acid and white precipitate no change seen a few drops of silver nitrate are added formed What are X and Y? X Y A iron(II) chloride iron(III) sulfate B iron(III) chloride iron(III) sulfate C iron(II) sulfate iron(III) chloride D iron(III) sulfate iron(III) chloride
Mark scheme: A
Q19 · Which element is in the same period of the Periodic Table as silicon?
19 Which element is in the same period of the Periodic Table as silicon? A germanium B scandium C sodium D strontium
Mark scheme: C
Q20 · Which statement about the halogens is correct?
20 Which statement about the halogens is correct? A A sample of bromine reacts with potassium chloride solution. B A sample of bromine reacts with potassium iodide solution. C A sample of chlorine has a higher density than a sample of bromine. D A sample of chlorine is a darker colour than a sample of bromine.
Mark scheme: B
Q21 · Which row shows the catalytic activity of transition elements and their compounds?
21 Which row shows the catalytic activity of transition elements and their compounds? catalytic activity of catalytic activity of compounds of transition elements transition elements A good good B good poor C poor good D poor poor
Mark scheme: A
Q22 · Which statement about the noble gases is not correct?
22 Which statement about the noble gases is not correct? A Noble gases are diatomic molecules. B Noble gases are unreactive gases. C Noble gases have full outer electron shells. D The noble gas argon is used in lamps.
Mark scheme: A
Q23 · The following statements are made about the metals copper, iron, magnesium and zinc
23 The following statements are made about the metals copper, iron, magnesium and zinc. 1 Their oxides are acidic. 2 They all conduct electricity in the solid state. 3 They all have high melting points. 4 They all react with dilute acids to form hydrogen. Which statements are correct? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4
Mark scheme: C
Q24 · Three metals, X, Y and Z, were reacted with water
24 Three metals, X, Y and Z, were reacted with water. The oxides of the same three metals were also heated strongly with carbon. The results are shown. reaction of the metal oxide metal reaction of the metal with water with carbon X vigorous reaction no reaction with cold water Y no reaction metal and carbon dioxide produced Z no reaction observed with cold water no reaction but reaction observed with steam What is a correct conclusion about X, Y and Z? A X is sodium and Y is magnesium. B X is the least reactive and Y is the most reactive. C Z is less reactive than Y. D Z is magnesium and Y is copper.
Mark scheme: D
Q25 · In a blast furnace, iron ore is mixed with coke and limestone, and heated in hot air
25 In a blast furnace, iron ore is mixed with coke and limestone, and heated in hot air. Compound R is formed. Compound R then reduces the iron ore to iron. Which equation shows the formation of compound R? A C + O2 → CO2 B CO2 + C → 2CO C CaCO3 → CaO + CO2 D CaO + SiO2 → CaSiO3
Mark scheme: B
Q26 · Which statement explains why aluminium is used in the manufacture of aircraft?
26 Which statement explains why aluminium is used in the manufacture of aircraft? A It conducts heat well. B It has a low density. C It is a good conductor of electricity. D It is easy to recycle.
Mark scheme: B
Q27 · Dry air is passed over hot copper until all the oxygen has reacted
27 Dry air is passed over hot copper until all the oxygen has reacted. dry air copper heat The volume of gas at the end of the reaction is 120 cm3. What is the starting volume of dry air? A 132 cm3 B 152 cm3 C 180 cm3 D 570 cm3
Mark scheme: B
Q28 · A steel bicycle which had been left outdoors for several months was starting to rust
28 A steel bicycle which had been left outdoors for several months was starting to rust. What would not reduce the rate of corrosion? A Remove the rust and paint the bicycle. B Remove the rust and store the bicycle in a dry shed. C Remove the rust and wipe the bicycle with a clean, damp cloth. D Remove the rust and wipe the bicycle with an oily cloth.
Mark scheme: C
Q29 · Which statements about water are correct?
29 Which statements about water are correct? 1 Household water contains dissolved salts. 2 Water for household use is filtered to remove soluble impurities. 3 Water is treated with chlorine to kill bacteria. 4 Water is used in industry for cooling. A 1, 2, 3 and 4 B 1, 2 and 3 only C 1, 3 and 4 only D 2, 3 and 4 only
Mark scheme: C
Q30 · Farmers use fertilisers to replace minerals in the soil that have been removed by the…
30 Farmers use fertilisers to replace minerals in the soil that have been removed by the crops they grow. Which elements in the soil are replaced by adding fertilisers? A Ca, P, O B K, O, S C N, K, P D N, O, S
Mark scheme: C
Q31 · Which statement is correct?
31 Which statement is correct? A Atmospheric carbon dioxide is not a cause of climate change. B Atmospheric methane is produced by respiration. C Burning natural gas decreases the level of carbon dioxide in the atmosphere. D Decomposition of vegetation causes an increase in atmospheric methane.
Mark scheme: D
Q32 · Which statement about sulfur and its compounds is not correct?
32 Which statement about sulfur and its compounds is not correct? A Sulfur dioxide is used as a food preservative. B Sulfur dioxide turns acidified aqueous potassium manganate(VII) from purple to colourless. C Sulfur forms a basic oxide. D Sulfur is used in the manufacture of sulfuric acid.
Mark scheme: C
Q33 · Which process is used to convert limestone (calcium carbonate) into lime?
33 Which process is used to convert limestone (calcium carbonate) into lime? A electrolysis B fractional distillation C incomplete combustion D thermal decomposition
Mark scheme: D
Q34 · Lime is used to treat an industrial waste
34 Lime is used to treat an industrial waste. untreated treated waste waste lime Which change occurs in the treatment? untreated waste treated waste A acidic → neutral B alkaline → acidic C alkaline → neutral D neutral → acidic
Mark scheme: A
More questions on The characteristic properties of acids and bases
Q35 · What is not the correct use of the fraction named?
35 What is not the correct use of the fraction named? name of fraction use A fuel oil making waxes B gas oil fuel in diesel engines C kerosene jet fuel D naphtha making chemicals
Mark scheme: A
Q36 · Four organic compounds are listed
36 Four organic compounds are listed. ethane ethanoic acid ethanol ethene Which bond do all four compounds contain? A C–C B C–H C C–O D O–H
Mark scheme: B
More questions on Formulae, functional groups and terminology
Q37 · The first three members of a homologous series are shown
37 The first three members of a homologous series are shown. F F F F F F F C F F C C F F C C C F F F F F F F Why do these molecules represent a homologous series? A because they contain fluorine and carbon atoms B because they have saturated bonds C because they have the same functional group D because they react differently from each other
Mark scheme: C
More questions on Formulae, functional groups and terminology
Q38 · Which substances can be obtained by cracking hydrocarbons?
38 Which substances can be obtained by cracking hydrocarbons? A ethanol and ethene B ethanol and hydrogen C ethene and hydrogen D ethene and poly(ethene)
Mark scheme: C
Q39 · Which reaction is used to make ethanol?
39 Which reaction is used to make ethanol? A adding steam to ethene B addition polymerisation C fractional distillation of petroleum D reacting ethene with aqueous bromine
Mark scheme: A
Q40 · Polymers are long-chain molecules made from small molecules linked together
40 Polymers are long-chain molecules made from small molecules linked together. Four polymers or types of polymer are listed. 1 carbohydrates 2 nylon 3 proteins 4 Terylene Which of these polymers or types of polymer are synthetic? A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4
Mark scheme: D
What was in this paper
The subtopics covered by these 40 questions, and how many questions each got. Open one in a new tab to see every Cambridge question on it.
3Air quality and climate2Exothermic and endothermic reactions2Formulae, functional groups and terminology2Identification of ions and gases2Oxides2Solids, liquids and gases2Alcohols1Alloys and their properties1Arrangement of elements1Corrosion of metals1Electrolysis1Experimental design1Extraction of metals1Fertilisers1Giant covalent structures1Group VII properties1Isotopes1Noble gases1Physical and chemical changes1Polymers1Preparation of salts1Properties of metals1Rate of reaction1Reactivity series1Redox1Simple molecules and covalent bonds1The characteristic properties of acids and bases1The mole and the Avogadro constant1Transition elements1Uses of metals1Water1What you needed in this session
Cambridge’s own grade thresholds for 2018 May/June, Paper 1 · Variant 1. A higher threshold means an easier paper — the bar moves with how the cohort did.