Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Solids, Liquids and Gases
279 practice questions
Topics covered
Practice questions
211–220 of 279
Question 211
2 marks · Normal
Answer and see the solution →Describe one similarity and one difference between the arrangement of particles in a liquid and a gas.
Question 212
2 marks · Normal
Answer and see the solution →Why do particles in a solid only vibrate rather than move freely? Explain your answer in terms of the forces between the particles.
Question 213
1 mark · Easy
Answer and see the solution →State what happens to the pressure of a fixed mass of gas if its volume is halved at constant temperature.
Question 214
2 marks · Easy
Answer and see the solution →Explain, using the particle model, why the pressure of a gas increases if it is compressed into a smaller volume at constant temperature.
Question 215
1 mark · Easy
Answer and check →Which of the following statements about Boyle's law is correct?
- A.The pressure and temperature of a gas are inversely proportional at constant volume.
- B.The volume of a gas decreases as its pressure increases, at constant temperature.
- C.The volume of a gas increases as its pressure increases, at constant temperature.
- D.The mass of a gas must change for Boyle's law to apply.
Question 216
2 marks · Easy
Answer and see the solution →A balloon filled with gas is left in a warm room. Answer the following questions.
(a)[1 mark]State what happens to the average kinetic energy of the gas molecules as the temperature of the room increases.
(b)[1 mark]Explain how this affects the motion of the gas particles.
Question 217
1 mark · Easy
Answer and see the solution →According to the particle model, what causes the pressure of a gas in a sealed container?
Question 218
2 marks · Easy
Answer and see the solution →A gas in a sealed syringe has a pressure of 80 kPa and a volume of 25 cm³ at constant temperature. What will its pressure be if the volume is reduced to 20 cm³? Give your answer to 2 significant figures.
Question 219
1 mark · Easy
Answer and see the solution →Give the relationship between the average kinetic energy of gas molecules and the temperature of the gas.
Question 220
1 mark · Easy
Answer and see the solution →Name one way to change the pressure of a fixed mass of gas inside a sealed container (other than changing its volume).