Across
- 1. Shows a chemical equation happened
- 5. The chemical formula after a chemical reaction
- 7. a neutrally charged subatomic particle
- 8. The chemical formula before a chemical reaction
Down
- 2. The number below the atom
- 3. a negatively charged subatomic particle
- 4. a positively charged subatomic particle
- 6. The big number at the beginning of a chemical formula