The properties below are for simple
covalent molecules :
|The electrical forces of attraction,
that is the chemical bond (also known as intramolecular
bond), between atoms
in any molecule are strong and most molecules do not change chemically on
|However, the electrical forces between
molecules (i.e. the inter-molecular forces) are
weak and easily weakened further on heating.|
the bulk material is not usually very strong.|
|Consequently small covalent molecules
tend to be volatile liquids, easily vapourised, or low melting point solids.
|On heating, the inter-molecular forces
are easily overcome with the increased kinetic energy gain of the particles
and so have low melting and boiling points.
|They are also poor conductors of
electricity because there are no free electrons or ions in any state to
carry electric charge.
|Most small molecules will dissolve in
a solvent to form a solution.