| A | B |
|---|
| balance | occurs when the number and type of atoms on the reactant's and product's sides of a chemical equation are equal |
| chemical change | a change in a substance that involves the breaking and reforming of chemical bonds to make a new substance |
| chemical equation | chemical formulas and symbols that represent a chemical reaction |
| chemical reaction | the breaking of bonds to form new substances. |
| coefficient | a number placed in front of a chemical formula to make the number of atoms on each side equal |
| conservation of atom | principle that states the number of each type of atom on the reactant's side must be equal to the number of each type of atom on the product's side of a chemical equation |
| excess reactant | a reactant that is not completely used up |
| hydrochloric acid | a highly acidic substance your stomach normally produces to break down food. |
| limiting reactant | the reactant that is used up first in a chemical reaction |
| percent yield | the actual yield of product in a chemical reaction divided by the predicted yield, and multiplied by one hundred |
| physical change | change in the physical properties of a substance. |
| product | substances that are produced in a chemical reaction from reactants |
| reactant | a substance that enters into and is altered in the course of a reaction |
