Chemistry 11:  We started off by going through Lab 16A, and discussing how "like dissolves like".  There was a short session of review, then we started the 60 minute mock final.  This is the key to the 60 minute mock final.  At the end we talked about plastics, and watched this short clip to see how polyethylene is made.   We didn't have time to see this 20 minute video, called "The Story of Stuff", which describes the materials economy.  Plastics, as cool as they are, are a major contributing factor to the scheme that is causing us to overuse natural resources.