1) Lesson 8 - Physical and Chemical Changes http://www.saskschools.ca/curr_content/science9/chemistry/lesson8.html
2) Physical Vs. Chemical Changes - Interactive Lesson http://virtual.yosemite.cc.ca.us/lmaki/chem150-99/chapters/chapter1/lessons/phys_chem/phy_c_1.htm
4) Types of Chemical Reactions http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm
5) Balancing Worksheet 1 http://dbhs.wvusd.k12.ca.us/webdocs/Equations/Balance-Worksheet1.html