Physical and chemical changes — Paper 1 · IGCSE Chemistry (9-1) 0971

33 Which process is used to convert limestone (calcium carbonate) into lime? A electrolysis B fractional distillation C incomplete combustion D thermal decomposition

1 marks

Answer: D

This question in 0971/11 May/June 2018

12 Which process is a physical change? A burning wood B cooking an egg C melting an ice cube D rusting iron

1 marks

Answer: C

This question in 0971/11 May/June 2019

14 Which row identifies a chemical and a physical change? chemical change physical change A boiling ethanol burning ethanol B burning ethanol evaporating ethanol C dissolving ethanol in water burning ethanol D evaporating ethanol dissolving ethanol in water

1 marks

Answer: B

This question in 0971/12 Oct/Nov 2019

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

1 marks

Answer: D

This question in 0971/11 May/June 2020

12 Which list contains only chemical changes? A melting, evaporating, dissolving B rusting, freezing, subliming C neutralisation, polymerisation, combustion D boiling, condensing, distillation

1 marks

Answer: C

This question in 0971/12 May/June 2020

15 Which process is a physical change? A burning a piece of magnesium B dissolving calcium carbonate in hydrochloric acid C melting an ice cube D the rusting of an iron nail

1 marks

Answer: C

This question in 0971/12 Oct/Nov 2020

33 When solid S is heated strongly, it forms gas G. G turns limewater cloudy. What are S and G and which type of reaction does S undergo? S G type of reaction A calcium carbonate carbon dioxide combustion B calcium carbonate carbon dioxide thermal decomposition C sodium carbonate oxygen combustion D sodium carbonate oxygen thermal decomposition

1 marks

Answer: B

This question in 0971/12 Oct/Nov 2020

14 When sulfur is heated it undergoes a … 1 … change as it melts. Further heating causes the sulfur to undergo a … 2 … change and form sulfur dioxide. Which words complete gaps 1 and 2? 1 2 A chemical chemical B chemical physical C physical chemical D physical physical

1 marks

Answer: C

This question in 0971/11 May/June 2021

12 Which row identifies a chemical change and a physical change? chemical change physical change A boiling ethanol burning ethanol B burning ethanol evaporating ethanol C dissolving ethanol in water burning ethanol D evaporating ethanol dissolving ethanol in water

1 marks

Answer: B

This question in 0971/11 May/June 2022

12 Which row identifies a chemical change and a physical change? chemical change physical change A boiling ethanol burning ethanol B burning ethanol evaporating ethanol C dissolving ethanol in water burning ethanol D evaporating ethanol dissolving ethanol in water

1 marks

Answer: B

This question in 0971/12 May/June 2022

13 Which process is a physical change? A burning wood B cooking an egg C melting an ice cube D rusting iron

1 marks

Answer: C

This question in 0971/12 Oct/Nov 2022

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

1 marks

Answer: B

This question in 0971/11 May/June 2024

16 Which of the processes produces a physical change? A thermal decomposition of calcium carbonate B addition of sodium chloride to water C addition of magnesium to hydrochloric acid D combustion of sodium

1 marks

Answer: B

This question in 0971/12 May/June 2024

15 Which process involves a chemical change? A adding sodium chloride to water B adding magnesium to hydrochloric acid C heating solid iodine until it turns into a gas D melting lead

1 marks

Answer: B

This question in 0971/12 Oct/Nov 2024

14 When a small piece of a Group I metal is placed into a large beaker of cold water, a reaction occurs. Four statements about this reaction are listed. 1 The metal melts. 2 Hydrogen is produced. 3 Steam is produced. 4 The pH of the solution increases. Which statements about this reaction describe a physical change? A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: A

This question in 0971/11 May/June 2025

15 Which process involves a chemical change? A dissolving copper(II) sulfate B distilling ethanol C freezing water D neutralising copper(II) oxide

1 marks

Answer: D

This question in 0971/12 May/June 2025

15 In which test-tube is a physical change taking place? A B C D dilute dilute water water hydrochloric hydrochloric acid acid calcium iron nail zinc carbonate sodium chloride

1 marks

Answer: A

This question in 0971/12 Oct/Nov 2025

30 Iron is extracted from hematite in a blast furnace. Which reaction involves thermal decomposition? A Calcium carbonate reacts to form calcium oxide and carbon dioxide. B Carbon (coke) reacts with oxygen to form carbon dioxide. C Carbon dioxide reacts with carbon to form carbon monoxide. D Iron(III) oxide reacts with carbon monoxide to form iron and carbon dioxide.

1 marks

Answer: A

This question in 0971/12 Oct/Nov 2025