Melvyn C. Usselman
Contributor
LOCATION: London, Ontario,
Associate Professor of Chemistry, University of Western Ontario, London.
Primary Contributions (5)
Chemical compound, any substance composed of identical molecules consisting of atoms of two or more chemical elements. All the matter in the universe is composed of the atoms of more than 100 different chemical elements, which are found both in pure form and combined in chemical compounds. A sample…
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