Across
- 2. Vapor form of a liquid
- 4. extremely small piece of matter
- 7. to heat water to make it hot and bubbly
- 9. smallest particle of a substance
- 11. to make something dense
- 12. the force over a given area
Down
- 1. turn liquid to a solid by removing heat
- 3. Basic building block of chemistry
- 5. a substance that is not reactive
- 6. turn from liquid into vapor
- 8. matter that takes the shape of its container
- 9. anything that takes up space and can be weighed
- 10. opposite of freeze
- 12. sometimes called a state
- 13. matter that maintains its shape