| A | B |
| chemical equation | a statement that uses symbols, formulas, and numbers to stant for a chemical reaction |
| chemical formula | a way to write the kinds and numbers of atoms in a compound |
| chemical reaction | a chemical change in which elements are combined or rearranged |
| coefficient | a number placed before a formula in a chemical equation |
| law of conservation of matter | energy cannot be created or destroyed |
| mixture | a combination of substances in which no reaction takes place |
| physical change | a change in which the appearance of a substance changes but the properties stay the same |
| product | a substance that is formed in a chemical reaction |
| reactant | a substance that is changed to form a product in a chemical reaction |
| solute | the substance that is dissolved in a solution |
| solution | a mixture in which one substance is dissolved in another |
| solvent | the substance in which the dissolving occurs in a solution |
| subscript | a number in a formula that tells the number of atoms of an element in a compound |