| − | Compounds that can act as either an acid or a base, depending on the situation.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref> | + | [[Compound|Compounds]] that can act as either an [[acid]] or a [[base]], depending on the situation.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref> |