Chemistry 11:  We learned about cyclic alkanes and did WS #3.  Time was given for the completion of the Atomic Theory Practice test - our Unit Test will be on Monday morning.  In the second half of our class we reviewed Titrations, and did the Titrations WS.  A new idea introduced with the worksheet is that scientists cannot arbitrarily exclude data once it has been measured.  In our class, we will use the 10% rule and say that if one trial in an experiment is more than 10% different than the rest of the trials that we can exclude that data.  At the end we learned about Haloalkanes, and did Unit 10 # 17-19.