Across
- 5. When a substance absorbs energy
- 6. When a liquid turns into a gas
- 7. When a gas turns into a liquid
- 8. When a solid turns to a liquid
- 9. A reaction that changes the substance
Down
- 1. When a solid turns into a gas
- 2. A reaction that changes the space a substance takes up
- 3. When a gas turns into a solid
- 4. When a liquid turns into a solid
- 6. When a substance releases energy