Across
- 1. the products before a chemical reaction
- 3. reactions things that are combined to make a new substance
- 7. the person who created the law of
- 8. anything that has mass and takes up space
- 10. things that are not balanced
Down
- 2. the building blocks of life
- 4. nothing can be created or destroyed
- 5. shows that no mass was created or destroyed
- 6. the substance after a chemical reaction
- 9. things equal