Molecular compound: neutral group of atoms joined by covalent bonds. covalent bond: formed by sharing e – ’s between atoms. (nonmetals only) Unit 6: Covalent.

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Presentation transcript:

molecular compound: neutral group of atoms joined by covalent bonds. covalent bond: formed by sharing e – ’s between atoms. (nonmetals only) Unit 6: Covalent Bonding

diatomic molecule: two atoms of the same element.

molecular formula: shows how many atoms of each element

Properties of molecular compounds:  lower m.p.’s than ionic compounds. (usually liquid or gas at room Temp.)  poor conductors

Formulas and Models

1.A molecular compound usually consists of A.two metal atoms and a nonmetal atom. B.two nonmetal atoms and a metal atom. C.two or more metal atoms. D.two or more nonmetal atoms. Quick Quiz!

2.A molecular formula shows… A.how many atoms of each element a molecule contains. B.a molecule's structure. C.which atoms are bonded together. D.how atoms are arranged in space. Quick Quiz.

3.Compared to ionic compounds, molecular compounds tend to have relatively A.low melting points. B.high melting points. C.high conductivity. D.low conductivity and high melting points. Quick Quiz.