Across
- 1. after chemical reaction
- 4. before the chemical reaction
- 5. mass cant be created nor desrtoyed
- 9. when charges are equal
- 10. a matiral substance
Down
- 2. numder before element/compound
- 3. telling a chemical reaction accured
- 6. number after element/compound
- 7. tells what the charge is
- 8. when charges are not equal