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Look at and describe the particle motion of solids, liquids and gases http://www.harcourtschool.com/activity/states_of_matter/
Watch what happens to water when it is heated and cooled. Go to this website http://www.sciencekids.co.nz/changing_state.swf
Change the temperature to find the melting and boiling points of water, copper and nitrogen. http://www.miamisci.org/af/sln/phases/watergas.html
Click on "Launch Interactive" to begin. http://www.pbs.org/wgbh/nova/physics/states-of-matter.html