| A | B |
|---|
| hydronium ion (H3O+) | is the ion that forms when a water molecule gains a hydrogen ion. |
| conjugate acid | is the ion or molecule formed when a base gains a hydrogen ion. |
| conjugate base | the ion or molecule that remains after an acid loses a hydrogen ion. |
| conjugate acid-base pair | consists of two ions or molecules related by the loss or gain of one hydrogen ion |
| amphoteric | A substance that can act as either an acid or a base |
| Lewis acid | accepts a pair of electrons during a reaction |
| Lewis base | donates a pair of electrons during a reaction |
| Brønsted-Lowry acid | a hydrogen-ion donor |
| Brønsted-Lowry base | is a hydrogen-ion acceptor |
