Physical and chemical changes — Paper 1 · IGCSE Sciences - Co-ordinated (Double) 0654

14 The graph shows the changes in temperature when a substance is cooled. X temperature / °C Y 00 time Which row in the table describes X and Y? X Y A boiling freezing B boiling melting C condensing freezing D condensing melting

1 marks

Answer: C

This question in 0654/11 May/June 2010

21 Rocks can be weathered by natural changes. large frost smaller acid rain soluble salts dissolving soluble salts rocks X rocks Y in rock Z in rivers Which row correctly describes the type of change? X Y Z A chemical chemical chemical B chemical physical chemical C physical chemical physical D physical physical physical

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2010

24 Rocks can be weathered by natural changes. large frost smaller acid rain soluble salts dissolving soluble salts rocks X rocks Y in rock Z in rivers Which row correctly describes the type of change? X Y Z A chemical chemical chemical B chemical physical chemical C physical chemical physical D physical physical physical

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2010

24 Rocks can be weathered by natural changes. large frost smaller acid rain soluble salts dissolving soluble salts rocks X rocks Y in rock Z in rivers Which row correctly describes the type of change? X Y Z A chemical chemical chemical B chemical physical chemical C physical chemical physical D physical physical physical

1 marks

Answer: C

This question in 0654/13 Oct/Nov 2010

19 When a match is struck, heat and light energy are produced. Which row describes the type of change and the type of reaction taking place? type of change type of reaction A chemical endothermic B chemical exothermic C physical endothermic D physical exothermic

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2014

20 When a match is struck, heat and light energy are produced. Which row describes the type of change and the type of reaction taking place? type of change type of reaction A chemical endothermic B chemical exothermic C physical endothermic D physical exothermic

1 marks

Answer: B

This question in 0654/12 Oct/Nov 2014

26 Lime is manufactured from limestone and is used for treating industrial waste. Which row describes the type of reaction involved in the manufacture of lime and in the treatment of industrial waste? manufacture waste treatment A reduction neutralisation B reduction oxidation C thermal decomposition neutralisation D thermal decomposition oxidation

1 marks

Answer: C

This question in 0654/11 May/June 2015

17 Which change is a physical change? A burning fuels B electrolysis of dilute sulfuric acid C melting ice D neutralising acids

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2015

17 Which changes are chemical changes? 1 conversion of steam to liquid water 2 cracking of alkanes 3 fractional distillation of petroleum 4 strongly heating calcium carbonate A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: D

This question in 0654/12 Oct/Nov 2015

15 Two different substances, X and Y, are heated and then cooled. The observations are shown. blue heat white cool white substance X solid solid solid grey heat purple cool grey substance Y solid vapour solid Which type of change occurs when X and Y are heated? X Y A chemical chemical B chemical physical C physical chemical D physical physical

1 marks

Answer: B

This question in 0654/12 May/June 2016

15 Which process is not a chemical change? A the distillation of petroleum B the electrolysis of molten lead bromide C the rusting of iron D the thermal decomposition of calcium carbonate

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2016

16 A student completes four experiments. Experiment 1 The student heats some ice and it melts. Experiment 2 The student heats some blue copper sulfate crystals and a white solid is formed. Steam is given off. Experiment 3 The student grinds up a lump of chalk to a powder. Experiment 4 The student heats green copper carbonate crystals and a black solid is formed. A gas is produced that turns limewater milky. Which row describes the changes in the experiments? physical changes chemical changes A 1 and 3 2 and 4 B 1 and 4 2 and 3 C 2 and 3 1 and 4 D 2 and 4 1 and 3

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2017

16 Which statement about fractional distillation is correct? A A chemical change occurs because new substances are formed. B A chemical change occurs because no new substances are formed. C A physical change occurs because new substances are formed. D A physical change occurs because no new substances are formed.

1 marks

Answer: D

This question in 0654/12 Oct/Nov 2017

16 When solid zinc carbonate is heated, a different solid and a gas are formed. Which type of change occurs? A chemical B exothermic C physical D separation

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2017

16 Which process is a physical change? A dissolving calcium carbonate in dilute nitric acid B dissolving calcium in water C dissolving ethanol in water D dissolving magnesium in dilute hydrochloric acid

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2018

14 Two substances, X and Y, are heated and then cooled. The observations are shown. blue heat white cool white substance X solid solid solid grey heat purple cool grey substance Y solid vapour solid Which type of change occurs when X and Y are heated? X Y A chemical chemical B chemical physical C physical chemical D physical physical

1 marks

Answer: B

This question in 0654/11 May/June 2019

15 Two substances, X and Y, are heated and then cooled. The observations are shown. blue heat white cool white substance X solid solid solid grey heat purple cool grey substance Y solid vapour solid Which type of change occurs when X and Y are heated? X Y A chemical chemical B chemical physical C physical chemical D physical physical

1 marks

Answer: B

This question in 0654/12 May/June 2019

15 Two substances, X and Y, are heated and then cooled. The observations are shown. blue heat white cool white substance X solid solid solid grey heat purple cool grey substance Y solid vapour solid Which type of change occurs when X and Y are heated? X Y A chemical chemical B chemical physical C physical chemical D physical physical

1 marks

Answer: B

This question in 0654/13 May/June 2019

15 Which processes are chemical changes? 1 conversion of steam to liquid water 2 cracking of alkanes 3 fractional distillation of petroleum 4 thermal decomposition of calcium carbonate A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2019

26 Which statement about the manufacture of lime from limestone is not correct? A A high pressure is used. B A high temperature is used. C Carbon dioxide is produced. D Thermal decomposition occurs.

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2019

15 Which processes are chemical changes? 1 conversion of steam to liquid water 2 cracking of alkanes 3 fractional distillation of petroleum 4 thermal decomposition of calcium carbonate A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: D

This question in 0654/12 Oct/Nov 2019

14 Which processes are chemical changes? 1 conversion of steam to liquid water 2 cracking of alkanes 3 fractional distillation of petroleum 4 thermal decomposition of calcium carbonate A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2019

24 Which processes produce carbon dioxide? 1 acid reacting with a metal 2 respiration 3 combustion of ethanol 4 acid reacting with a metal oxide A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: C

This question in 0654/13 Oct/Nov 2019

25 Which process does not produce carbon dioxide? A acid reacting with a metal B acid reacting with sodium carbonate C complete combustion of methane D respiration

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2020

18 Two processes are listed. 1 the conversion of liquid water into steam 2 the combustion of magnesium ribbon Which row describes the two processes? process 1 process 2 A endothermic endothermic B endothermic exothermic C exothermic endothermic D exothermic exothermic

1 marks

Answer: B

This question in 0654/12 Oct/Nov 2020

25 Which process does not produce carbon dioxide? A acid reacting with a metal B acid reacting with sodium carbonate C complete combustion of methane D respiration

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2020

14 Which row identifies physical changes and chemical changes? physical changes chemical changes A cooking an egg and rusting of iron ice melting B ice melting and burning wood water boiling C mixing sand and water baking a cake and water boiling D rusting of iron and solid dissolving and baking a cake ethanol evaporating

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2021

14 Which row correctly identifies the named changes? physical changes chemical changes A condensation and combustion evaporation and neutralisation B evaporation and neutralisation condensation and combustion C condensation and evaporation combustion and neutralisation D combustion and neutralisation condensation and evaporation

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2021

15 Three different processes are listed. 1 heating ice to form water 2 lighting a match 3 removing zinc from sodium chloride solution by filtration Which processes are physical changes? A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

1 marks

Answer: C

This question in 0654/11 May/June 2022

15 Some physical and chemical changes are listed. 1 burning methane 2 dissolving sugar in water 3 evaporating ethanol 4 rusting iron Which changes are chemical changes? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: B

This question in 0654/12 May/June 2022

15 Some physical and chemical changes are listed. 1 burning methane 2 dissolving sugar in water 3 evaporating ethanol 4 rusting iron Which changes are chemical changes? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: B

This question in 0654/13 May/June 2022

15 When solid zinc carbonate is heated, a different solid and a gas are formed. Which type of change occurs? A chemical B exothermic C physical D separation

1 marks

Answer: A

This question in 0654/12 May/June 2023

15 When solid zinc carbonate is heated, a different solid and a gas are formed. Which type of change occurs? A chemical B exothermic C physical D separation

1 marks

Answer: A

This question in 0654/13 May/June 2023

14 Which change is a chemical change? A combustion of hydrocarbons B filling a balloon with air C freezing a glass of water D mixing salt and sand

1 marks

Answer: A

This question in 0654/12 Feb/March 2024

15 Which statements about chemical changes are correct? 1 The separation of petroleum into gasoline, naphtha and diesel is a chemical change. 2 The separation of water into hydrogen and oxygen is a chemical change. 3 In a chemical change, a new substance is always formed. 4 In a chemical change, heat is always released. A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: C

This question in 0654/11 May/June 2024

26 Which type of reaction is used to manufacture lime from limestone? A addition polymerisation B cracking C neutralisation D thermal decomposition

1 marks

Answer: D

This question in 0654/12 May/June 2024

15 Which process involves a chemical change? A burning a wooden splint B dissolving sodium chloride in water C evaporating water D distilling petroleum

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2024

20 A piece of magnesium ribbon is placed in dilute hydrochloric acid. The magnesium reacts and bubbles of a colourless gas are formed. What is the word equation for this reaction? A magnesium + hydrochloric acid  magnesium chloride + hydrogen B magnesium + hydrochloric acid  magnesium chloride + carbon dioxide + water C magnesium + hydrochloric acid  magnesium chloride + carbon dioxide D magnesium + hydrochloric acid  magnesium chloride + hydrogen + water

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2024

15 Which process involves a chemical change? A burning a wooden splint B dissolving sodium chloride in water C evaporating water D distilling petroleum

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2024

20 A piece of magnesium ribbon is placed in dilute hydrochloric acid. The magnesium reacts and bubbles of a colourless gas are formed. What is the word equation for this reaction? A magnesium + hydrochloric acid  magnesium chloride + hydrogen B magnesium + hydrochloric acid  magnesium chloride + carbon dioxide + water C magnesium + hydrochloric acid  magnesium chloride + carbon dioxide D magnesium + hydrochloric acid  magnesium chloride + hydrogen + water

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2024

19 Which change is a chemical change? A boiling water B combustion of alkanes C filtering a mixture of sand and water D fractional distillation of petroleum

1 marks

Answer: B

This question in 0654/12 Oct/Nov 2025

19 Which change is a chemical change? A boiling water B combustion of alkanes C filtering a mixture of sand and water D fractional distillation of petroleum

1 marks

Answer: B

This question in 0654/13 Oct/Nov 2025