acidic -
being or containing an acid; of a solution having an excess of hydrogen atoms (having a pH of less than 7)
alkalic,
alkaline relating to or containing an alkali; having a pH greater than 7; "alkaline soils derived from chalk or limestone"
amphiprotic,
amphoteric having characteristics of both an acid and a base and capable of reacting as either
chemical science,
chemistry the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
acid having the characteristics of an acid; "an acid reaction"