Website for free powerpoints.....
http://science.pppst.com/energy.html
States of MatterA - kinetic theory, phase properties, other states, and thermal expansion
States of MatterB - phase changes
Periodic Table (nebo) - great overall description
Periods and Groups - illustrations of periods and groups very helpfull
Elements, Atoms, Ions - thorough
http://www.sheppardsoftware.com/Elementsgames.htm periodic table games
Reference Textbook