Chemistry 12:  The Oxidation Number WS was collected today.  We began with a short discussion about spontenaiety, and we learned how to use our databooklet to determine if a reaction will occur, or not.  We read section 4.3, and completed # 7-14.  A Mini review WS was given out after that.  In the second half we learned how to balance half cells, and we completed any 10 problems from Unit 5 # 19

Science 9:  On Wednesday, we did pg 100 # 1-15 from the old Science Probe 10, which will be due on Friday.   We also learned about Scientific Notation, and began a short lab where we calculated the carbon stored in a tree.  We will have a Test on Biogeochemical Cycling on Monday, and a field trip on Thursday to the water treatment and sewage treatment plant.