States of Matter and Phase Changes

Horizontal Words

1. what happens when gas cools (12)
3. solid to a gas (11)
5. transition between states of matter (11)
7. the opposiite of melting (8)
9. particles in a solid state _____________ in place. (7)
11. particles spread out and rarely touching (3)
13. particles in a _____________ state slide past each other. (6)
15. heat of vaporization is the amount of ________ needed for a gaseous phase change (4)

Vertical Words

2. energy needed to separate molecules of a substance (12)
4. liquid to gas (12)
6. total kinetic energy of the particles in a substance (13)
8. gas to solid (10)
10. Increasing the __________ increases the kinetic energy of the substance. (11)
12. particles packed close together (5)
14. solid to liquid (7)