Recent Tutoring Session Reviews
"Continued to work on late assignments and improving overall grade. The focus of many problems were stoichiometry and then several in a kinetics unit dealing with energy. Heat of formation and vaporization and bond energies were covered. A few assignments dealt with molarity. The student and I also worked on a few of the lab assignments, constructing hypotheses, dealing with theoretical vs experimental yield, and finally writing results, error analysis and conclusion. We were able to look at the grades of each assignment and attempt to bring the grade back up to full credit."
"Today we finished up the last few homework questions for this week's assignment and then did extra practice problems to prepare the student for her quiz on Thursday. The remaining homework problems covered VSEPR and polarity of molecules. She did well with the Lewis dot structures and converting them into the appropriate "3-D" representation. She also did well identifying geometry and shape of a molecule. She clearly understood electronegativity and the dipole bond concepts but putting it all together in a molecule was confusing for her. To address this issue, we did several extra practice problems from the chapter on VSEPR and polarity. For all problems I had her draw the Lewis structure, then identify the geometry, shape, and bond angles. Then I had her draw the dipole arrows for any dipole bonds and identify if the molecule was polar or non-polar. We talked through the various instances in which a molecule would be polar versus non-polar. By the end of our session, she had a much clearer concept of polarity and was doing very well identifying whether a molecule was polar or not. Initially, she was unclear on the C-H bonds and kept thinking it was a polar bond, but we cleared up that misunderstanding which helped tremendously in getting her to understand polarity of various molecules. I think she is well prepared for her quiz."
"Covered study packets of topics to be covered on the chemistry exam. Acids/bases, electro-chemistry, organic chemistry, moles and ideal gas law were the main topics covered."