molecule
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- Chemical combination of two or more atoms of the same chemical element (such as O2) or different chemical elements (such as H2O).
EPA - Cite This Source - This Definition - Atoms, Black Carbon, Chemical reaction, Compound, element, inorganic compound, Light-duty vehicles, Non-Methane Volatile Organic Compounds (NMVOCs), Organic compound, Oxidize, Volatile organic compounds (VOCs)
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