| A | B |
| Chemical formula | Tells what elements it contains and the ratio of the atoms of those elements. |
| Chemically stable | If the outer energy level is completely filled with electrons. |
| Chemical bond | A force that holds together the atoms in a compound. |
| Toxic | A poisonous compound. |
| Corrosive | A compound that can destroy metal, and other materials. |
| Ion | A positve or negative atom. |
| Ionic bond | A bond between a positvie and a negative ion. |
| Covalent bond | Share electrons. |
| Polar molecule | Has a positive and a negative end. |
| Nonpolar molecule | Does not have a positive and negative end. |
| Oxidation number | Shows the combining ability of an element. |
| Binary compound | A compound composed of only two elements. |
| Polyatomic ion | A positive or negatively charged group of atoms. |
| Hydrate | A compound that has water chemically attached to it. |