2009 Cardboard Boat Race http://www.youtube.com/watch?v=DIFzpyXPeiU
7.1 Set of study pages that will help you with the concept of matter. http://www.chem4kids.com/files/matter_intro.html
7.2 Some information to help you better understand the three states of matter http://www.saburchill.com/chemistry/chapters/chap033.html