Recent Tutoring Session Reviews
"In our session today, the student and I covered the rest of chapter 17 (electrochemistry) in preparation for his test on Tuesday. We talked about the effect changing the concentrations can have on the cell potential. He practiced predicting the effect (higher or lower cell potential) and then using the Nernst equation to actually find the new cell potential. Then we talked about how a concentration difference can actually be used to make a current in a concentration cell. Next, we talked about batteries and the common batteries currently used, including fuel cells. We discussed corrosion of metals and the oxidation of common metals. This involves the movement of electrons within a metal is much the same concept as batteries. Lastly, we talked about electrolysis. This is the process by which galvanic cells are recharged, running the reaction in reverse. It requires the input of energy. We reviewed all of the concepts from chapter 17 again, briefly. To ensure that he had mastered the chapter, we did some practice AP problems from his class. He made a few mistakes, but he seemed to understand the concepts themselves well."
"We reviewed the concepts in electric fields and forces and then we went on to a practice problem to review and understand circuits."
"We reviewed the problems he missed on his recent exam as well as some practice problems for current material. The student received a very good score on his last exam. We reviewed resonance contributions to reactivity, stability, and aromaticity. We also reviewed ylides, alpha hydrogen, enol, and enamine/imine reactions. He is going to continue with his practice problems as they are assigned before we meet again."