Across
- 1. to do work or transfer heat
- 4. particles vibrate but can't move around
- 5. any substance that has a defined composition
- 9. composition structure and properties of matter and the changes it undergoes
- 11. matter with variable composition
- 12. very high kinetic energy
- 13. process that absorbs energy from the surroundings
- 14. particles can separate and move throughout the container
Down
- 1. substance made up of atoms
- 2. process that releases energy into the surroundings
- 3. matter with constant composition
- 6. mass that occupies space
- 7. substance made from two or more elements
- 8. particles can move around but are still close together
- 10. a substance that is currently gas but normally is a liquid or solid at room temperature