Week of 4/6/15

HOMEWORK SOLUTIONS for ch. 18

Monday: No school, teacher work day

Tuesday: Review of entropy and gibbs free energy informally. Then worked on multiple choice entropy problems.

Wednesday: Review of equilibrium concepts.  Just asked what you remembered and then lead you through some ideas (Le Chatelier, Q vs K).  Then lecture on meaning of delta G and it’s relationship to the equilibrium constant.  Spent time working practice AP free response questions. Last bit of class told you that I’m putting a design a lab question on your test as shown on page 6 of unit outline packet (Hess’s Law to calculate heat of combustion of Mg).

Thursday: Review time. Handed out some practice multiple choice.  Here’s the answers for the first 3 pages. The last page has answers that are all D except the last two are C.

Friday: Test!

Week of 3/23

Monday: Instead of having the test we started the thermo unit.  We went over Q=mCdeltaT, did a lab with CaCl2 and the baking soda/vinegar reaction to calculate heat of reaction/mole.  We also did some Qin = -Qout problems and briefly went over heating curves and those calculations.

Tuesday: Test on IMF and properties

Wednesday: Warm up was a Qin = Qout problem with melting! Most of class was spent learning 3 more methods for calculating heat: bond enthalpies, hess’s law puzzles and heats of formation.

Thursday: Review of 3 types of problems then internal energy and work problems.

Friday: Entropy and Gibbs Free energy.  We kinda ended the day short since it was the day before spring break so even though there was time to work problems I don’t think many of you did…