Chapter 2 - Figure 2.6 - Acids, bases, and salts - Question - Page 34: 1

An acid is defined as a proton (H+) donor while a base is proton (H+) acceptor.

An acid is defined as a substance that dissociates into one or more hydrogen ions (H+) and one or more negative ions (anions) while a base dissociates into one or more positive ions (cations) plus one or more negatively charged hydroxide ions (OH-) that can accept, or combine with, protons.