Solids, liquids and gases — Paper 1 · IGCSE Sciences - Co-ordinated (Double) 0654

24 A medicine contains two liquids that do not normally mix. Adding a small amount of liquid X helps to make the liquids mix. X shake liquid mixture Which word best describes liquid X? A analgesic B antacid C catalyst D emulsifier

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2006

14 When water is heated to 100 °C, it changes to steam. The steam has a larger volume than the water. Which change on heating explains this increase in volume? A The bonds between hydrogen and oxygen break. B The molecules become lighter. C The spacing between the molecules increases. D The water molecules expand.

1 marks

Answer: C

This question in 0654/11 May/June 2007

25 An experiment using olive oil and water is shown. Liquid X is added and the contents of the test- tube are shaken. liquid X test-tube olive oil shake well water How is liquid X described? A a colloid B an emulsifier C a gel D a sol

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2009

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

14 The three states of matter are represented by diagrams X, Y and Z. X Y Z Which change occurs during condensation? A X to Y B X to Z C Y to X D Z to X

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2010

16 The three states of matter are represented by diagrams X, Y and Z. X Y Z Which change occurs during condensation? A X to Y B X to Z C Y to X D Z to X

1 marks

Answer: C

This question in 0654/13 Oct/Nov 2010

25 Which is not a colloid? A cellulose B milk C paint D smoke

1 marks

Answer: A

This question in 0654/11 May/June 2011

16 The graph shows the changes in temperature when a substance is cooled. X temperature / °C Y 0 0 time Which describes the processes occurring at X and Y? X Y A boiling melting B condensing freezing C freezing condensing D melting boiling

1 marks

Answer: B

This question in 0654/12 May/June 2011

16 The graph shows the changes in temperature when a substance is cooled. X temperature / °C Y 0 0 time Which describes the processes occurring at X and Y? X Y A boiling melting B condensing freezing C freezing condensing D melting boiling

1 marks

Answer: B

This question in 0654/13 May/June 2011

14 Which would be a liquid at 50 °C? melting point °C boiling point °C A –100 80 B –73 –10 C –60 40 D 95 280

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2011

25 Salad dressing contains oil dispersed in water. What is the name of this type of colloidal system? A emulsion B gel C sol D solution

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2011

15 Which would be a liquid at 50 °C? melting point °C boiling point °C A –100 80 B –73 –10 C –60 40 D 95 280

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2011

26 Salad dressing contains oil dispersed in water. What is the name of this type of colloidal system? A emulsion B gel C sol D solution

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2011

14 Which would be a liquid at 50 °C? melting point °C boiling point °C A –100 80 B –73 –10 C –60 40 D 95 280

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2011

18 Which statement describes the particles in a gas? A As the particles move quicker the pressure of the gas decreases. B The movement of the particles is unaffected by temperature. C The particles are in random motion. D The particles are ordered.

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2014

14 Which process occurs when the arrangement of particles in a substance changes from regular to random? A boiling B condensing C freezing D melting

1 marks

Answer: D

This question in 0654/12 May/June 2019

14 Which process occurs when the arrangement of particles in a substance changes from regular to random? A boiling B condensing C freezing D melting

1 marks

Answer: D

This question in 0654/13 May/June 2019

14 Which statement describes the arrangement of particles in a solid? A The particles are close together and move randomly. B The particles are close together and vibrate about a fixed point. C The particles are far apart and move randomly. D The particles are far apart and vibrate about a fixed point.

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2019

14 Which properties are used to distinguish between solids and gases? 1 compressibility 2 melting point 3 flammability A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2022

14 Which change is represented by the diagram? A condensation B diffusion C evaporation D solidification

1 marks

Answer: B

This question in 0654/12 Oct/Nov 2022

14 In which substance are the particles closest together at room temperature? A CO2 B Ne C N2 D Zn

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2022

14 Cyclopentane is a hydrocarbon. The melting point of cyclopentane is –94 C and its boiling point is 49 C. In process 1, the temperature of cyclopentane changes from 55 C to 45 C. In process 2, the temperature of cyclopentane changes from –100 C to –90 C. Which row identifies the changes in processes 1 and 2? 1 2 A boiling freezing B boiling melting C condensation freezing D condensation melting

1 marks

Answer: D

This question in 0654/11 May/June 2024

14 The three states of matter are represented by particle diagrams X, Y and Z. X Y Z Which row identifies each state of matter? solid liquid gas A Y X Z B Y Z X C X Z Y D Z Y X

1 marks

Answer: B

This question in 0654/12 Feb/March 2025

14 Which change of state results in the greatest increase in the separation of particles? A gas to liquid B liquid to gas C liquid to solid D solid to liquid

1 marks

Answer: B

This question in 0654/11 May/June 2025