PhET Simulations:

Gas Properties

Solid, Liquid, Gas

Three types of intermolecular forces for neutral molecules:

London Dispersion forcesvan der Waals forces

Dipole-dipole forces

Hydrogen bonding

Also important in solution:

Ion-dipole forces

Dipole-dipole forces

London dispersion forces:

Hydrogen bonding:

2-10 kJ/mol 2-10 kJ/mol 5-25 kJ/mol 15 kJ/mol >200 kJ/mol

Critical Points from that bastion of quality video - YouTube

Copper Sulfate

Alum

Apatite

Amethyst

Quartz - crystalline Silica or quartz glass - amorphous