| A | B |
| acid | a substance that produces hydronium ions when it dissolves in water |
| hydronium ion | H3O+; a hydrogen ion attached to a water molecule |
| acidic hydrogen | any hydrogen atom that can be transferred to water |
| ionization | ions form from a covalent compound |
| base | a substance that produces hydroxide ions (OH) when it dissolves in water |
| acidic anhydride | a nonmetal oxide that forms an acid when it reacts with water |
| basic anhydride | metal oxides that react with water to form bases |
| ion | a charged particle |