See Polyatomic Ions for more. Compare with polyatomic ion and diatomic molecule . A polyatomic molecule is an uncharged particle that contains more than two atoms. A colorless, odorless, flammable gas, found in petroleum and natural gas. It is used as a fuel and as a raw material for building more complex organic molecules.
Propane is the third member of the alkane series.
Compare with base . Ratios of atoms in a compound. Ratios of moles of compounds in a reaction. A branch of chemistry that quantitatively relates amounts of elements and compounds involved in chemical reactions, based on the law of conservation of mass and the law of definite proportions . Compare with molecular formula and empirical formula .