Chelate - An inert complex compound or ion in which a metallic atom or ion is bound at two or more points to a molecule or ion so as to form a ring. The metal is called the nuclear atom and may be part of more than one ring. In an emulsion, one of the liquids contains minute drops of the other evenly distributed throughout. Hydrocarbons - Any of a large group of organic compounds containing only hydrogen and carbon, obtained principally from petroleum and coal tar. Methane, benzene, and acetylene are hydrocarbons.
Gasoline is a mixture of hydrocarbons.
Hydrous - Having water as a constituent. Nonion - One or more ions that are neutral. Phosphate - A salt or ester of phosphoric acid. Phosphates are necessary to the growth of organisms and have extensive use as fertilizers. Bread contains phosphates.