Mar 18, 2015 | AP, Big Idea 4, Site News, Subscriber Updates
The UNIT 4 notes have been tweaked a little, correcting a couple of typos and amending a couple of sentences for clarity. The AP Worked Answers for 1996, 3 and 1998, 8 have been updated.
Sep 29, 2014 | AP, Big Idea 3, Site News, Subscriber Updates
The UNIT 3 notes have been updated with various tweaks, one of the main ones being the re-introduction of the Nernst equation.