Molecule 01
Molecule 01 : Chemistry and Chemical Disasters. (Chem; Phys) (1) The smallest physical unit of a substance, consisting of atoms held together by chemical forces and possessing the properties of the substance in quantity. (2) The smallest unit of a substance capable of independent existence. Cf: Atom; Ion. Note: A molecule can consist of identical atoms, such as oxygen (02) or different atoms, such as carbon dioxide (CO2). In a few gases and metals the molecule and the atom are identical
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