Recent Tutoring Session Reviews
"The student and I spent the session going over Lewis dot structures, specifically in reference to resonance structures. The student said she didn't really understand what was going on when they discussed them in class, so I started by explaining that resonance structures are different forms of compounds that are present in nature and vary in stability, usually according to formal charge. We then spent the majority of the session doing book problems since the student didn't have any assigned homework. Talking through the first few helped the student recognize patterns, at which pointed we talked about how some elements "like" to form certain numbers of bonds (e.g. carbon will form four if possible, nitrogen three with one lone pair, etc). At this point we discussed formal charge more and how that indicated stability, and therefore natural occurrence, of certain resonance structures. By the end, the student seemed confident on the subject and was able to do several problems with just my confirmation of accuracy."
"Today we conducted an overview of conversions from grams to moles to different particles. We reviewed all steps needed to get from one unit to the next using either the molar mass or Avogadro's number to arrive at the desired unit. The student completed practice problems to illustrate forward and backwards conversions. We included steps to calculate the molar mass of multiple compounds to use in the conversion table. In addition, I reviewed percent composition and STP conversions to prepare the student for the upcoming test."
"The student and I caught up on chemistry, focusing on the whole chapter of covalent bonds, covering everything from how they form, to how compounds with them are named."
"Today, we focused on molality and mole fraction. We discussed their relationship to each other and on the physical properties of solutions, such as freezing and boiling point."
"We reviewed the student's latest organic chem test. She only had a few problems with naming of organic compounds. We solved problems from first semester test on gas law, equilibrium, nuclear stability, why iron is most stable, and helium flash. She is much more comfortable with most problems by now."
"The student went through his very cool chemistry assignment that uses all of the stoichiometry and energy analysis he has learned to give an estimate of how many pounds of CO2 his family produces yearly. He definitely picked up the technique and it seemed to start being intuitive for him."