Recent Tutoring Session Reviews
"Tonight, like usual, the student and I focused on both chemistry and trigonometry. First, we reviewed an exam that her chemistry class had taken on rate laws and equilibrium. Next, we looked at a list of problems regarding Le Chatelier's principle. She understood the concept very well last week, so we had no trouble at all reviewing it tonight. Finally, we looked at some very advanced trigonometry problems for her upcoming math test; these included trig identities, multiple angles, and other tough topics. We successfully worked through nearly all of the problems and had a great session!"
"In this session we covered chemical equilibrium. This included much of the mathematical portion of the curriculum, including determining when a reaction is nearing equilibrium (Q vs K) and predicting the concentration of products or reactants at equilibrium. The student had no problems with this portion, and he received much practice for his test this week."
"The student and I went over a problem set she was given for homework. We covered thermodynamics and equilibrium constants. She was initially confused about the material but seemed to pick it up throughout the session and knew how to approach most problems on her own by the end of the meeting."
"The student and I discussed problems that he struggled with on his test. The problems included concepts such as buffer composition, acid/base equilibrium reactions, titrations, and calculating pH. By the end of our session he seemed much more confident about being able to do these types of problems."
"Today the student worked on multiple-choice and free-response questions, mainly over the subject of gases. The questions required her to be comfortable doing calculations with the ideal gas law, performing stoichiometric manipulations involving gaseous reactions, describing ideal gas theory on a molecular level, and intuiting how change in one property might change another based on proportionality. Although she initially had difficulty understanding partial pressure calculations, she was able to get the concept down by the end of the session, as several problems required her to use it; she had little-to-no trouble with the remaining topics. With the remaining time, we did a few questions on bonding and molecular structure (an upcoming topic) together, allowing her to refresh her memory on drawing proper Lewis dot structures. I showed her how to determine if an exception to the octet rule is legitimate based on formal charges, a concept she had not yet encountered."
"We went over the student's test packet involving acid-base equilibria. We reviewed how to find the pH and pOH of solutions given the concentration of H+, as well as how to find the acid concentration in solutions of weak acids. We also went over concentrations of ions in monoprotic vs polyprotic acids. Overall, the student seems to be doing much better in this section than previous sections."
"Tonight we went over Le'Chatelier problems and equilibrium constants as well as Bronsted-Lowry acids and bases. The student seems to be getting better at solving the problems and anticipating the proper method for solution. When I left, there were only about 5 problems left and he felt confident that he could solve them on his own."
"We went though stoichiometry and I explained how the student can use mole ratio to find the amount of each compound. We also covered the volume of gas and energy calculation according to stoichiometry. We solved some questions for each part then we went through his homework for these concepts. He understood how he has to solve them and is doing good in this regard."
"The student and I worked on some acid/base problems in preparation for his test on Monday. He knows the concepts well. I suggested he also look up the previous free response questions on the test and find all the acid/base ones as well for extra exposure."
"We covered equilibrium reactions and how to apply K values and concentrations to solve for more information. She picks things up quickly and I feel like she connected some concepts which will help tremendously in moving forward."
"The student took the exam today on the material we covered last week. She has a packet of past AP Chem Exam questions due on Thursday so that is what we worked on. The problems we worked on covered gas laws, periodic trends, and intermolecular forces. If she was actually taking the test, I imagine she would get a "3." It was a good review. At the end, we had 15 minutes remaining, and we did work on one of the problems that her friend had done."
"We talked about acid and base chemistry. We discussed Bronsted-Lowry/Lewis definitions and examples of strong acids or bases as well as what makes them strong (dissociation). We also talked about equilibrium and how to work with problems including finding pH, pkA, ka/kb, [H+] and [OH-]."