Welcome to your B8 Practice Questions 1.8 – Heating, cooling & changes of state

1. 
What happens to a solid when it is heated?

2. 

Eventually the particles have enough energy to break the forces holding the together, and the solid melts.

3. 
On heating, the particles in a liquid move faster and the liquid expands.

4. 

At the point, the particles have enough energy to break the forces attracting them together – the liquid boils.

5. 
Which particles can escape from the surface of a liquid?

6. 

The particles in a gas are arranged totally and spread very far apart.

7. 
In a liquid, the particles are packed in a regular arrangement called a lattice.

8. 

As the temperature of a liquid rises, particles have enough energy to escape from the surface.

9. 
Why is the volume of a gas much more easily changed by temperature and pressure than the volume of a solid or a liquid?

10. 

If the temperature of a gas is raised, the gas particles move and occupy a greater volume.

11. 
If the temperature of a gas is lowered, the particles move more slowly and occupy a smaller volume.

12. 

When the temperature is lowered, gas particles are more likely to with each other and move together.

13. 
What does an increase in pressure do to the particles of a gas?

14. 

When the external pressure is lowered, the gas particles occupy a space.

15. 
When the temperature of a gas is raised, there is more chance of interaction between the particles.

16. 

When a solid is heated, the particles gain and vibrate more strongly.