• States of Matter Song:
    https://www.youtube.com/watch?v=vDZhUkp30tE&list=PLA686464F296A15D6
     
    Matter Interactive: 
    http://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks3/science/changing_matter/index.htm 
     
    Matter Interactive 2: 
    http://www.harcourtschool.com/activity/states_of_matter/index.html 
     
    Reversible vs. Irreversible Changes:
    http://www.bbc.co.uk/schools/scienceclips/ages/10_11/rev_irrev_changes_fs.shtml