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© Copyright Pearson Prentice Hall Molecular Compounds > Slide 1 of 18 Molecules and Molecular Compounds In nature, matter takes many forms. The noble gases, including helium and neon, are monatomic. That means they exist as single atoms. 8. 1

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Molecular Compounds >

Slide 1 of 18

Molecules and Molecular Compounds

In nature, matter takes many forms. The noble gases, including helium and neon, are monatomic. That means they exist as single atoms.

8.1

Molecular Compounds >

Slide 2 of 18

Molecules and Molecular Compounds

Some compounds are so different from ionic compounds that attractions between ions fail to explain their bonding.

The atoms held together by sharing electrons are joined by a covalent bond.

8.1

Molecular Compounds >

Slide 3 of 18

Molecules and Molecular Compounds

A molecule is a neutral group of atoms joined together by covalent bonds. Air contains oxygen molecules.

A diatomic molecule is a molecule consisting of two atoms. An oxygen molecule is a diatomic molecule.

8.1

Molecular Compounds >

Slide 4 of 18

Molecules and Molecular Compounds

A compound composed of molecules is called a molecular compound. Water and carbon monoxide are molecular compounds.

8.1

Molecular Compounds >

Slide 5 of 18

Molecules and Molecular Changes

Molecular compounds tend to have relatively lower melting and boiling points than ionic compounds.

8.1

Molecular Compounds >

Slide 6 of 18

Molecules and Molecular Compounds8.1

Molecular Compounds >

Slide 7 of 18

Molecules and Molecular Changes8.1

Ethane, a component of natural gas, is also a molecular compound.

Molecular Compounds >

Slide 8 of 18

Molecular Formulas8.1

A molecular formula is the chemical formula of a molecular compound.

A molecular formula shows how many atoms of each element a molecule contains.

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© copyright pearson prentice hall molecular compounds > slide 1 of 18 molecules and molecular...

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