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indentify and demonstrate the law of conservation of matter
| Term | Definition |
|---|---|
| law of conversation of matter (mass) | the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes . |
| reactantat | a substance or molecule that participates in a chemical reaction. |
| product | a substance that forms in chemical reaction. |
| coefficient | a number written before a chemical formula which shows how many molecules of a compuond are present . |