Across
- 3. the weight of matter
- 5. stuff that takes up space
- 7. reaction absorbing heat
- 10. amount of heat
- 11. 1 basic chemical particle
- 14. forming a whole
- 16. the difference in the compound
- 17. reaction releasing heat
Down
- 1. a difference on the outside
- 2. 1 element
- 4. 2 or more atoms
- 6. several elements combined
- 8. the effect
- 9. type of science
- 12. the end result
- 13. the mass
- 15. made of several atoms
- 18. the temperature