| A | B |
|---|
| chemical reaction | process in which new substances with new chemical and physical properties are formed |
| reactant | substance that is changed in a chemical reaction |
| product | substance that is formed in a chemical reaction |
| law of conservation of matter | law that states that matter cannot be created or destroyed by a chemical change |
| chemical equation | statement in which chemical formulas are used to describe a chemical reaction |
| coefficient | number of molecules of a substance are involved in a chemical reaction |
| Subscript | number of atoms of each element in a chemical formula |
| Chemical formula | way of writing the name of a compound using chemical symbols |
