In chemistry, a base is defined as a substance that can accept protons or donate electron pairs, leading to an alkaline solution when dissolved in water. Chemically, bases neutralize acids through a chemical reaction that involves the exchange of hydrogen ions. They are typically characterized by having a higher concentration of hydroxide ions relative to the concentration of hydrogen ions, resulting in a high pH reading. The properties of a base are governed by the nature of the atoms present, and they generally react with acidic components to form water and a salt. Understanding base chemistry is fundamental to chemical equilibrium and the analysis of aqueous solutions.