C2(i) - Bonding and Reactions 8.

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Covalent Substances.

Substances formed from covalent bonds can be either simple molecules or giant structures.

Simple Molecular Substances.

1) The atoms form very strong covalent bonds to form small molecules of several atoms.

2) By contrasts the forces of attraction between these molecules are very weak.

3) The result of these weak intermolecular forces is that the melting and boiling points are very low, because the molecules are easily parted from each other.

4) Most molecular are gases or liquids at room temperature.

5) Molecular substances don't conduct electricity, simply because there are no ions.

6) You can usually tell a molecular substance just from it's physical state because they are normally liquids or gases or an easily-melted solid.

7) Substances like chlorine


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