Friday, March 31, 2017


Students were shown this video in today's class.   Paul Andersen demonstrates the centrality of water to most acid-base chemistry, and explains how to calculate equilibrium constants for acids (Ka) and bases (Kb), and how to express those as pKa's or pKb's:

Friday, March 17, 2017


Students were shown the following video by Paul Anderson in class on Friday, March 17th---which is also the last day of the 3rd quarter!  

There is no worksheet associated with this video, but students should be able to explain how water's molecular structure creates polarity, which in turn generates many of water's other properties, including cohesion, adhesion and the tendency to dissociate into ions of opposite charge (H+ and OH-).  

Make sure you are familiar with this material, students!

FINALLY, AS A REMINDER:  Saturday School takes place in Mr. Hatfield's classroom (N-63) on Saturday, March 18th, between 8:45 and 11:30.   

If you were assigned Saturday School and fail to attend without a parent contact, it will be treated as defiance.

Thursday, March 9, 2017



Here are the Power Point Notes for Unit 7:  Thermochemistry.  

In this you will find discussions of phase changes (again!),  heat transfer, the 1st and 2nd Laws of Thermodynamics, and problems to calculate energy (q) , specific heats and enthalpies of reaction:

Click here to download those notes.