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S8P1.g
| Term | Definition |
|---|---|
| Law of Conservation of matter (mass) | The law that states that mass cannot be created or destroyed in ordinary chemical and physical changes |
| Reactant | A substance or molecule that participates in a chemical reaction |
| Product | A substance that forms in a chemical reaction |
| Coefficient | A number written before a chemical formula which shows how many molecules of a compound are present |