noun

A substance with particular chemical properties including turning litmus red, neutralizing alkalis, and dissolving some metals; typically, a corrosive or sour-tasting liquid of this kind.

trees were exposed to mixtures of heavy metals, acids, and overdoses of nutrients

adjective

Containing acid or having the properties of an acid; having a pH of less than 7.

acid soils

caustic,corroding,eroding,erosive,abrasive,biting,mordant,burning,stinging