(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

a white crystalline solid consisting mainly of sodium chloride (NaCl)

a pungent gas compounded of nitrogen and hydrogen (NH3)

a grey salt of calcium (CaC) used in making acetylene

binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent

any binary compound formed by the union of hydrogen and other elements