Substances can exist in three states of matter - solid ... and the substance changes state. First from solid to liquid, then if we continue heating to raise the temperature and break the remaining ...

The behaviour of the tiny particles in each case helps explain the properties of each state of matter at the everyday scale. Freezing, boiling, condensing and other changes of state can also be ...

Students also look in more detail at the water molecule to help explain the state changes of water.