Across
- 4. after chemical reaction
- 6. before chemical reaction
- 7. group of atoms bonded together
- 9. shows the no mass was created or destroyed
- 10. represent the chemical reaction
Down
- 1. anything that takes up space
- 2. atoms can’t be_ or destroyed
- 3. building blocks of life
- 5. equations: representation of a chemical formula in symbols
- 8. of mass: mass can never be created or destroyed