Category:Bases (chemistry)

Bases are defined by the Brønsted–Lowry theory as chemical substances that can accept a proton, i.e., a hydrogen ion. In water this is equivalent to a hydronium ion). The Lewis theory instead defines a Base as an electron-pair donor.  The Lewis definition is broader &mdash; all Brønsted–Lowry bases are also Lewis bases.

For more information see acid–base reaction theories.