Across
- 4. The force that pulls particles towards each other.
- 6. What happens to most materials when they are cooled and become smaller.
- 7. The process where a liquid changes into a solid when cooled.
- 9. The process in which a solid changes into a liquid when heated.
- 10. What happens to most materials when they are heated and become larger.
Down
- 1. The process by which a liquid changes into a gas at its surface.
- 2. The movement of particles from an area of high concentration to an area of low concentration.
- 3. The process where a gas changes into a liquid when cooled.
- 5. The amount of mass in a given volume of a substance.
- 8. The force exerted on a surface per unit area.