Site contains relevant information and details of particle theory of solids, liquids and gases. Site is read only and contains no interactive activities, but is very useful as a revision aid for good readers.

Site contains a simple table showing the properties of solids liquids and gases. Also includes diagram naming the changes e.g. melting, condensation etc. also contains focused information on gases.

Site contains read only information containing information covering physical changes of state, including line graphs showing melting points and boiling points. Test included at end of site.

Site contains information covering physical changes that occur during changes of state. Also includes clear diagrams showing a cooling curve and heating curve highlighting the change of state. Level 5-7.

Site contains a small amount of read only information about solids liquids and gases before directing you to other sites for information. No interactive activities.