alkali

nouns

any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water

"bases include oxides and hydroxides of metals and ammonia"

alkali, base

is derived from

is derived from

a mixture of soluble salts found in arid soils and some bodies of water; detrimental to agriculture

alkali

is derived from

is derived from

is a type of (narrower)

a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)