Giant ionic structures . . .
 
What is a giant structure?  The structure and properties of sodium chloride as a typical example of a giant ionic structure.
 
Giant covalent structures . . .
 
The structures and properties of diamond, graphite and silicon dioxide as typical examples.
 
Metallic structures . . .
 
How the arrangement of atoms in a metal leads to the typical properties of metals.
 
Molecular structures . . .
 
How the arrangement of simple molecules relates to their physical properties.