Cambridge IGCSE Chemistry (9-1) 0971 — 2023 May/June Paper 1 · Variant 1
0971/11/M/J/23 · 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 diagram shows the result of dropping a purple crystal into water
1. The diagram shows the result of dropping a purple crystal into water. after water five hours —__ > purple purple solution crystal Which processes take place in this experiment? chemical reaction diffusing dissolving 0 OO WwW PY x « & Ke O&K << & x
Mark scheme: D
Q2 · Which row about elements, mixtures and compounds is correct?
2 Which row about elements, mixtures and compounds is correct? metallic non-metallic mixture compound element element A copper methane brass sulfur B brass sulfur copper methane C copper sulfur brass methane D brass methane copper sulfur
Mark scheme: C
Q3 · What are the relative charge and relative mass of an electron?
3 What are the relative charge and relative mass of an electron? relative relative charge mass A 0 1 1 B 0 2000 C –1 1 1 D –1 2000
Mark scheme: D
Q4 · The atomic structures of four particles, W, X, Y and Z, are shown
4 The atomic structures of four particles, W, X, Y and Z, are shown. electrons neutrons protons W 2 2 2 X 2 2 3 Y 2 3 2 Z 3 2 3 Which particles are isotopes of the same element? A W and X B W and Y C X and Y D X and Z
Mark scheme: B
Q5 · Which row shows the properties of an ionic compound?
5 Which row shows the properties of an ionic compound? electrical melting point conductivity / °C of solid A good 98 B good 3652 C poor 78 D poor 801
Mark scheme: D
Q6 · Which row describes the formation of single covalent bonds in methane?
6 Which row describes the formation of single covalent bonds in methane? A atoms share a pair of electrons both atoms gain a noble gas electronic structure B atoms share a pair of electrons both atoms have the same number of electrons in their outer shell C electrons are transferred from one both atoms gain a atom to another noble gas electronic structure D electrons are transferred from one both atoms have the same number atom to another of electrons in their outer shell
Mark scheme: A
Q7 · Which equation represents the neutralisation of nitric acid using sodium hydroxide?
7 Which equation represents the neutralisation of nitric acid using sodium hydroxide? A NaOH(aq) + HNO3(aq) → NaNO3(aq) + H2O(l) B NaOH(aq) + HNO3(aq) → NaNO3(l) + H2O(l) C NaOH(l) + HNO3(l) → NaNO3(l) + H2O(aq) D NaOH(l) + HNO3(l) → NaNO3(l) + H2O(l)
Mark scheme: A
More questions on The characteristic properties of acids and bases
Q8 · What is the relative formula mass of ammonium nitrate, NH4NO3?
8 What is the relative formula mass of ammonium nitrate, NH4NO3? A 80 B 108 C 122 D 150
Mark scheme: A
Q9 · Concentrated aqueous sodium chloride is electrolysed using inert electrodes
9 Concentrated aqueous sodium chloride is electrolysed using inert electrodes. Gases X and Y are produced at the electrodes shown. X Y concentrated aqueous sodium chloride – + – + What are X and Y? X Y A chlorine hydrogen B hydrogen chlorine C hydrogen oxygen D oxygen hydrogen
Mark scheme: B
Q10 · Which statement about hydrogen fuel cells is correct?
10 Which statement about hydrogen fuel cells is correct? A Hydrogen fuel cells do not produce carbon dioxide. B Hydrogen fuel cells do not need oxygen. C The waste from a hydrogen fuel cell is an acidic gas. D The reaction in a fuel cell is endothermic.
Mark scheme: A
Q11 · A reaction pathway diagram is shown
11 A reaction pathway diagram is shown. products energy reactants progress of reaction Which statement about this reaction is correct? A The reaction rate increases during the reaction. B The reaction is endothermic. C The reaction transfers thermal energy to the surroundings. D The temperature of the surroundings increases.
Mark scheme: B
Q12 · Lumps of calcium carbonate react with dilute hydrochloric acid as shown
12 Lumps of calcium carbonate react with dilute hydrochloric acid as shown. CaCO3 + 2HCl → CaCl 2 + H2O + CO2 Which change in conditions decreases the rate of the reaction? A increasing the concentration of the acid B increasing the volume of the acid C increasing the size of the lumps of calcium carbonate D increasing the temperature
Mark scheme: C
Q13 · Solid copper(II) sulfate exists in two different forms, anhydrous and hydrated
13 Solid copper(II) sulfate exists in two different forms, anhydrous and hydrated. One of these forms is blue and the other is white. The change between these two forms is reversible. blue form white form What is the blue form and how is the change from the blue form to the white form brought about? change to blue form white form A anhydrous add water B anhydrous heat C hydrated add water D hydrated heat
Mark scheme: D
Q14 · Four redox equations and statements about the equations are shown
14 Four redox equations and statements about the equations are shown. reaction statement 1 C + O2 → CO2 carbon is oxidised 2 CO2 + C → 2CO carbon dioxide is oxidised 3 CO2 + C → 2CO carbon is oxidised 4 Fe2O3 + 3CO → 2Fe + 3CO2 iron(III) oxide is oxidised Which statements about the equations are correct? A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4
Mark scheme: B
Q15 · Sodium hydroxide forms an alkaline solution with a pH of 14
15 Sodium hydroxide forms an alkaline solution with a pH of 14. Which indicator turns yellow when added to this solution? A litmus B methyl orange C thymolphthalein D universal indicator
Mark scheme: B
More questions on The characteristic properties of acids and bases
Q16 · Which row identifies an acidic oxide and a basic oxide?
16 Which row identifies an acidic oxide and a basic oxide? acidic oxide basic oxide A CaO CuO B CaO SO2 C CO2 CuO D CO2 SO2
Mark scheme: C
Q17 · A student makes aqueous copper(II) chloride by adding excess copper(II) carbonate to…
17 A student makes aqueous copper(II) chloride by adding excess copper(II) carbonate to dilute hydrochloric acid. What is the next step in the method in the formation of solid copper(II) chloride? A crystallisation B evaporation C filtration D titration
Mark scheme: C
Q18 · Which statements about the trends across a period of the Periodic Table are correct?
18 Which statements about the trends across a period of the Periodic Table are correct? 1 Aluminium is more metallic than sodium. 2 Beryllium is more metallic than carbon. 3 Boron is more metallic than lithium. 4 Magnesium is more metallic than silicon. A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4
Mark scheme: C
Q19 · Which row shows the trend in melting point, density and reactivity as Group I is…
19 Which row shows the trend in melting point, density and reactivity as Group I is descended? melting point density reactivity A increases decreases decreases B decreases increases increases C increases decreases increases D decreases increases decreases
Mark scheme: B
Q20 · Which row describes a similarity and a difference between chlorine and bromine?
20 Which row describes a similarity and a difference between chlorine and bromine? similarity difference A both are gases at room chlorine and bromine temperature and pressure have different colours B both exist as chlorine is more diatomic molecules dense than bromine C both have atoms with only bromine will react with seven outer-shell electrons aqueous sodium chloride D both react with aqueous chlorine is more reactive potassium iodide than bromine
Mark scheme: D
Q21 · Which statement describes transition elements?
21 Which statement describes transition elements? A They have high densities and high melting points. B They have high densities and low melting points. C They have low densities and high melting points. D They have low densities and low melting points.
Mark scheme: A
Q22 · Which diagram shows the electronic structure of a noble gas?
22 Which diagram shows the electronic structure of a noble gas? A B C D
Mark scheme: A
Q23 · Which gas is made when powdered zinc is added to dilute hydrochloric acid?
23 Which gas is made when powdered zinc is added to dilute hydrochloric acid? A carbon dioxide B chlorine C hydrogen D oxygen
Mark scheme: C
Q24 · Which metal is used in aircraft manufacture because it has a low density?
24 Which metal is used in aircraft manufacture because it has a low density? A aluminium B copper C iron D potassium
Mark scheme: A
Q25 · The diagram represents the structure of a solid
25 The diagram represents the structure of a solid. sodium chloride \ \ & x
Mark scheme: B
Q26 · Three students, X, Y and Z, are told that solid P reacts with dilute acids and also…
26 Three students, X, Y and Z, are told that solid P reacts with dilute acids and also conducts electricity. The table shows the students’ suggestions about the identity of P. X Y Z copper iron graphite Which students are correct? A X, Y and Z B X only C Y only D Z only
Mark scheme: C
Q27 · Which substances in the air are needed for iron to rust?
27 Which substances in the air are needed for iron to rust? A oxygen and water B oxygen only C water and carbon dioxide D water only
Mark scheme: A
Q28 · Part of the reactivity series of metals is shown
28 Part of the reactivity series of metals is shown. metal P decreasing reactivity carbon metal Q metal R Which row shows how each metal is extracted from its ore? metal P metal Q metal R A electrolysis of molten ore electrolysis of molten ore heating with carbon B heating with carbon electrolysis of molten ore electrolysis of molten ore C heating with carbon heating with carbon electrolysis of molten ore D electrolysis of molten ore heating with carbon heating with carbon
Mark scheme: D
Q29 · Several processes are used to treat domestic water
29 Several processes are used to treat domestic water. Which row identifies a reason for the given process? process reason A chlorination removes impurities B filtration removes insoluble solids C sedimentation removes soluble solids D use of carbon kills bacteria
Mark scheme: B
Q30 · Which pair of compounds make an NPK fertiliser?
30 Which pair of compounds make an NPK fertiliser? A ammonium sulfate and potassium phosphate B calcium hydroxide and ammonium nitrate C calcium phosphate and potassium chloride D potassium nitrate and ammonium sulfate
Mark scheme: A
Q31 · Some information about gas X is listed
31 Some information about gas X is listed. ● It is not present in clean, dry air. ● It is not a cause of respiratory problems. ● It is responsible for global warming. What is X? A carbon dioxide B carbon monoxide C methane D nitrogen dioxide
Mark scheme: C
Q32 · Part of the structure of a molecule of vitamin A is shown
32 Part of the structure of a molecule of vitamin A is shown. H H C H H H C C C C C O H H H H Which statements about this part of the structure are correct? 1 It is saturated. 2 There are two alkene groups. 3 The structure shows a carboxylic acid. A 1 and 3 B 1 only C 2 and 3 D 2 only
Mark scheme: D
More questions on Formulae, functional groups and terminology
Q33 · The fractional distillation of petroleum is shown
33 The fractional distillation of petroleum is shown. Which fraction contains hydrocarbons with the longest chain length? fuel gas A B C D petroleum bitumen
Mark scheme: D
Q34 · Which equation represents the cracking of an alkane?
34 Which equation represents the cracking of an alkane? A 3C2H4 → C6H12 B C6H12 + H2 → C6H14 C C6H14 → 6C + 7H2 D C6H14 → C2H4 + C4H10
Mark scheme: D
Q35 · Which statements about ethanol are correct?
35 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
Mark scheme: B
Q36 · Which substances react with aqueous ethanoic acid to form a gas?
36 Which substances react with aqueous ethanoic acid to form a gas? 1 magnesium 2 magnesium carbonate 3 magnesium oxide A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only
Mark scheme: B
Q37 · In reaction R, 2000 molecules of CH2=CH2 react to form a single molecule X only
37 In reaction R, 2000 molecules of CH2=CH2 react to form a single molecule X only. 2000 CH2=CH2 → X Which terms describe reaction R, CH2=CH2 and X? reaction R CH2=CH2 X A addition monomer polymer B addition polymer monomer C substitution monomer polymer D substitution polymer monomer
Mark scheme: A
Q38 · The concentration of acids and alkalis can be determined by titration
38 The concentration of acids and alkalis can be determined by titration. Which pieces of equipment are needed to perform a titration? 1 2 3 4 A 1 and 2 B 1 and 3 C 2 and 3 D 2 and 4
Mark scheme: D
Q39 · Which process is used to produce drinking water from sea water?
39 Which process is used to produce drinking water from sea water? A crystallisation B distillation C filtration D chlorination
Mark scheme: B
Q40 · The results of two separate tests on a white solid X are shown
40 The results of two separate tests on a white solid X are shown. test result add dilute nitric acid effervescence add aqueous a gas is formed which turns sodium hydroxide and warm damp red litmus paper blue What is X? A aluminium carbonate B aluminium nitrate C ammonium carbonate D ammonium nitrate
Mark scheme: C
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.
2The characteristic properties of acids and bases2Acid–base titrations1Air quality and climate1Alcohols1Alkanes1Arrangement of elements1Atomic structure and the Periodic Table1Carboxylic acids1Corrosion of metals1Diffusion1Electrolysis1Elements, compounds and mixtures1Exothermic and endothermic reactions1Extraction of metals1Fertilisers1Formulae, functional groups and terminology1Fuels1Group I properties1Group VII properties1Hydrogen–oxygen fuel cells1Identification of ions and gases1Isotopes1Noble gases1Oxides1Polymers1Preparation of salts1Properties of metals1Rate of reaction1Reactivity series1Redox1Relative masses of atoms and molecules1Reversible reactions and equilibrium1Separation and purification1Simple molecules and covalent bonds1Transition elements1Uses of metals1Water1What you needed in this session
Cambridge’s own grade thresholds for 2023 May/June, Paper 1 · Variant 1. A higher threshold means an easier paper — the bar moves with how the cohort did.