Across
- 2. made of two or more elements
- 5. anything that has mass and volume
- 7. releases energy
- 8. variable composition
- 9. can move around
- 11. can separate
- 13. energy of motion
- 14. made up of atoms
Down
- 1. matter with constant composition
- 3. high kinetic energy
- 4. type of matter
- 6. substances that start the reaction
- 7. absorbs energy
- 10. vibrating particles
- 12. amount of matter