The nucleus and isotopes . . .
Subatomic particles. The nucleus of the atom. Isotopes.
Electrons and their arrangement . . .
Working out the number of electrons in an atom and their arrangement. The relationships between those arrangements and the Periodic Table.
Covalent bonding - single bonds . . .
Bonding by sharing electrons.
Covalent bonding - multiple bonds . . .
Bonding by sharing electrons more than one pair of electrons.
Dative covalent (co-ordinate) bonding . . .
Covalent bonds in which both electrons in the bond come from the same atom.
Covalent bonding - bond polarity . . .
A very brief introduction to polarity in covalent bonds.
Ionic bonding . . .
Bonding by transferring electrons from one atom to another.
Metallic bonding . . .
The bonding in metals by the delocalisation of electrons.
Intermolecular forces . . .
A brief look at the attractions between molecules which hold them together in solids and liquids.