In Beautiful Chemistry, we talk about crystals, quasicrystals and glasses, which are all solids. Here, we see the molecular structure of gases and liquids.

This is a computer generated 3D image of a carbon monoxide molecule. Carbon monoxide contains one carbon atom and one oxygen atom. It is an odorless gas that is highly toxic to humans.

Explore the properties of air, and what happens to air when heated and cooled.

Use this interactive animation to find out about whether or not gases dissolving in water.

This lesson will introduce the phase changes that occur at the boiling, freezing, and melting points. It is 4 of 4 in the series titled "Boiling, Freezing, Melting Point."

This lesson will introduce the phase changes that occur at the boiling, freezing, and melting points. It is 1 of 4 in the series titled "Boiling, Freezing, Melting Point."