| A | B |
| Binary Compound | Chemical compound composed of only two elements,  |
| Law of Definite Proportions | Law stating that every pure substance always contains the same elements combined in the same proportions by weight,  |
| Acid | Water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt,  |
| Base | Water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water,  |
| Law of Multiple Proportions | The law states that when chemical elements combine, they do so in a ratio of small whole numbers,  |
| Monatomic Ion | Is an ion consisting of one or more atoms of a single element,  |
| Polyatomic Ion | Also known as a molecular ion, is an ion composed of two or more atoms covalently bonded or of a metal complex that can be considered as acting as a single unit in the context of acid and base chemistry or in the formation of salts.,  |