Across
- 2. amount of matter an object contains
- 3. matter changes makeup and properties
- 7. A chemical reaction that releases energy
- 9. To prevent the loss of something
- 10. observed without matter changing
- 11. amount of mass in a given space
Down
- 1. matter maintains properties after change
- 4. ability of a substance to burn
- 5. A chemical reaction that absorbs energy
- 6. observed when matter changes to become an entirely new substance.
- 8. matter can't be created or destroyed