Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Ideal Gas Molecules
70 practice questions
Topics covered
Practice questions
1–10 of 35 · Easy
Question 1
1 mark · Easy
Answer and see the solution →State the name of the process by which a solid changes directly into a gas without becoming a liquid.
Question 2
1 mark · Easy
Answer and check →Which statement best describes the movement of gas particles?
- A.They vibrate around fixed positions in a regular pattern.
- B.They move randomly at high speed in all directions.
- C.They slide past each other in a fixed volume.
- D.They are tightly packed but move randomly only in one direction.
Question 3
2 marks · Easy
Answer and see the solution →Give one property and one example for each of the three states of matter: solid, liquid and gas.
Question 4
2 marks · Easy
Answer and see the solution →Explain why gases are easily compressed but solids are not, using the particle model.
Question 5
3 marks · Easy
Answer and see the solution →The diagram below shows particles in the three states of matter.
(a)[1 mark]Label each box with 'solid', 'liquid', or 'gas' based on the arrangement of the particles.
Three boxes, each containing dots: (b)[2 marks]Explain why the particles in Box 3 move around more freely than those in Box 1.
Question 6
2 marks · Easy
Answer and see the solution →Explain why liquids can flow but solids cannot, using the arrangement and movement of their particles.
Question 7
1 mark · Easy
Answer and see the solution →Name the force responsible for holding the particles together in a solid.
Question 8
1 mark · Easy
Answer and check →In which state of matter are the forces between particles the weakest?
- A.Solid
- B.Liquid
- C.Gas
- D.Plasma
Question 9
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 10
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.