| A | B |
| subscript | number written below and to the right of a symbol |
| subscript | tells the number of atoms of an element in the formula |
| coefficient | large number in front of a chemical formula, tell how many molecules |
| chemical symbol | abbreviation for an element |
| chemical bond | the force that holds 2 atoms together in a molecule |
| product | a substance fromed in a chemical reaction |
| chemical formula | a shorthand way using chemical symbols and numbers to represent a substance |
| precipitate | a solid produced as a result of a chemical reation |
| chemical reaction | substances change to produce new and different substances |
| chemical equation | numbers and formulas written to describe a chemical reaction between substances |
| ionic bond | a bond in which electrons are transferred from one atom to another |
| covalent bond | a bond in which electrons are shared by atoms |
| reactant | the starting substances in a chemical reaction |
| electrons | bonds are formed by transferring or sharing ---------- |