1) Chemical property 
In chemistry, an amphoteric species is a molecule or ion that can react as an acid as well as a base. The word is derived from the Greek word amphoteroi (ἀμφότεροι) meaning `both`. Many metals (such as zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Amphoterism depends on the oxidation state of the oxid.....
in chemistry, reactivity of a substance with both acids and bases, acting as an acid in the presence of a base and as a base in the presence of an ... [5 related articles]
The ability to react with both acids and bases. Ability of substance to act as either an acid or a base.
The ability to react with both acids and bases.Ability of substance to act as either an acid or a base.
amphoterism The quality of exhibiting the characteristics of an acid and a base and having the capacity to react either as an acid or a base.