Across
- 3. Molecules of the same substance sticking together
- 6. A combination of substances
- 9. A chemical reaction that lets out heat
- 10. The smallest unit of matter
- 13. The amount of matter in something
- 14. Substances formed during a chemical reaction
- 16. A physical reaction
- 18. Substances before a chemical reaction
- 19. The ability to work
Down
- 1. A characteristic of a physical reaction
- 2. Two or more atoms joined together
- 4. A characteristic of a chemical reaction
- 5. The measure of kinetic energy
- 7. A chemical reaction
- 8. What happened after you mix substances
- 11. Has mass and takes up space
- 12. The amount of space something takes up
- 15. A chemical reaction that absorbs heat
- 17. The transfer of thermal energy