Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Solids, Liquids and Gases
279 practice questions
Topics covered
Practice questions
91–100 of 133 · Easy
Question 91
4 marks · Easy
Answer and see the solution →A student investigates how heating a solid wax block causes it to change state.
(a)[2 marks]Describe how the arrangement and movement of particles change as the wax is heated from a solid to a liquid.
(b)[2 marks]Explain why the temperature of the wax stays constant for a short time during melting, even though energy is still being supplied.
Question 92
4 marks · Easy
Answer and see the solution →A student sets up a practical to investigate the specific heat capacity of a metal block.
(a)[2 marks]List two measurements the student must take to calculate the specific heat capacity.
(b)[2 marks]State and explain one reason why the calculated value of the specific heat capacity might be higher than the true value.
Question 93
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 94
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 95
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 96
2 marks · Easy
Answer and see the solution →Explain why gases are easily compressed but solids are not, using the particle model.
Question 97
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 98
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 99
1 mark · Easy
Answer and see the solution →Name the force responsible for holding the particles together in a solid.
Question 100
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