Across
- 3. turning a gas into a liquid
- 6. turning a solid into a gas
- 8. a small particle, building block of matter
- 9. turning a gas into a solid
- 11. a combination of 2 or more compounds
- 13. turning a solid into a liquid
- 15. turning a liquid into a gas
Down
- 1. the amount of matter per volume
- 2. the amount of matter in an object
- 4. substance that is made of only one type of atom
- 5. anything that has mass and takes up space
- 7. energy another word for heat
- 10. a substance with 2 or more different elements
- 12. turning liquid into a solid
- 14. matter with a composition that is always the same