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capable of functioning either as an acid or as a base.
Historical Examples

In regard to the indications of the amphoteric character of stronger acids, see Chapter XV.
The Elements of Qualitative Chemical Analysis, vol. 1, parts 1 and 2. Julius Stieglitz

Bodies of this kind are known as “amphoteric electrolytes,” since they yield both positive and negative ions, if dissociated.
The Chemistry of Plant Life Roscoe Wilfred Thatcher

(chem) able to function as either a base or an acid Also amphiprotic

“neither acid nor alkaline,” 1832, from Greek amphoteros “each or both of two,” variant of amphi-.

amphoteric am·pho·ter·ic (ām’fə-těr’ĭk)
Having the capacity to react as either an acid or a base.
Capable of reacting chemically as either an acid or a base. Water, ammonia, and the hydroxides of certain metals are amphoteric.


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