"Changes of state crossword": HTML5 Crossword

Across

4. When particles cool down, they ______ energy. (5)
7. The change of state from a gas to a liquid is known as __________. (0,12)
8. Solids do not _____, but they do vibrate. (4)
9. Gas pressure is caused by particles ________ with the sides of a container. (9)
13. In a gas, particles are free to move __________ . (8)
16. If you ________ the volume of a container, you increase the gas pressure in the container. (8)
17. The forces of attraction between liquid particles are ________. (4)
18. When particles gain energy, they _______ more. (7)
19. The forces of attraction between solid particles are ______. (6)

Down

1. The change of state from a solid to a gas is known as _____________. (11)
2. The state where particles are free to move, but are close together with weak forces of attraction. (6)
3. The change of state from a liquid to a solid is known as __________. (8)
5. In expansion of a substance, it is the _______ between particles that gets bigger. (5)
6. When particles are heated, they _____ energy. (4)
10. Increasing the temperature of a gas __________ the pressure, as there are more collisions with container. (9)
11. Substances contract when they get ______. (6)
12. The state where particles are arranged in a regular order. (5)
14. The change of state from a solid to a liquid is known as _______. (7)
15. Diffusion happens faster in ________ conditions. (6)