Across
- 4. a chemical equation written so as to satisfy the law of conservation of mass
- 5. a number in front of a chemical substance that says how many of it in a chemical reaction
- 6. a tiny number lower than a chemical letter that says how many atoms of it in a molecule
Down
- 1. a way of writing down a chemical reaction in symbols (2 words)
- 2. the starting materials in a chemical reaction
- 3. the outcome substances of a chemical reaction