Across
- 3. the particles are not held together and have lots of energy
- 4. all matter is made up of ________
- 7. adding heat to a liquid
- 9. a negative subatomic particle
- 11. removing heat from a gas
- 13. the particles are able to slide past each other
- 14. the positive subatomic particle found in the nucleus
Down
- 1. protons have a __________ charge
- 2. removing heat from a liquid
- 5. adding heat to a solid
- 6. the electrons are found here
- 8. the particles are held in a fixed shape
- 10. a neutral particle; has no charge
- 12. the center of the atom