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A molecule is formed from two or more atoms of a single element. An example is h2o. two hydrogen atoms and one oxygen atom forming a molecule of water! This question is archived.
Noun. Chemistry A substance made up of two or more elements joined by chemical bonds into a molecule. The elements are combined in a definite ratio. Water, for example, is a compound having two hydrogen atoms and one oxygen atom in each molecule.Adjective. Composed of more than one part, as a compound eye or leaf.a union; a chemical bonding of elementsâ Wilkes.oun. 1. compound-a whole formed by a union of two or more elements or parts. whole-all of something including all its component elements or parts; Europe considered as a whole; the whole of American literature.