Chemblog!

Regents: we did a few more percent composition problems and then did several "magic triangle" mass to mole to number of molecules problems. We will continue with those and go into stoichiometry using chemical reactions, tomorrow.
There will be plenty of practice problems to do over the weekend in order for you to prepare for Monday's first Math of Chem exam.

Honors: we covered mole-mole, mass-mass, volume-volume, mass-volume, and molecule-molecule problems. Tomorrow's exam will cover up to and including the notes on volume-volume problems.
This quarter is severely truncated by winter break so the value of each test is magnified. Most of you were unprepared for the last test and, as a result, did poorly. You do not have that many opportunities to overcompensate for that last exam. Therefore, make sure that you are expert at each problem type before you walk into the exam room tomorrow.

AP: we took the first of many equilibrium tests, which will all involve ICE tables (and eventually the very cool SRFC "surface" table!) so, if you know how to work them already (especially the "C"= change line), that bodes well for the future.
Tomorrow, we will put a HEAVY dent into the acid-base unit