Recent Tutoring Session Reviews
"Today's session covered dilution problems with unit factor conversions. The student also practiced writing balanced chemical equations given the English words. The student was well prepared for the session with homework problems and specific questions. For our next session, the student will move to the next unit. I suggested some additional resources for an overview of the topic. The student will also practice writing correct chemical formulas given the names of compounds."
"We briefly went over calculations in aqueous equilibria, explained through some conceptual lapses, and derived the Henderson-Hasselbalch Equation to understand it better. I will attempt to look for sources on pH calculations from pKa values for one question from the test dealing with acid strengths."
"In our session the student and I focused entirely on balancing chemical equations. He has made great progress and is close to mastery of the subject."
"Today the concepts of Lewis structures and covalent bonding was covered. The student initially faced challenges properly constructing the structures, but quickly caught on after he did a few and began to understand the process in terms of valence electrons. We also covered multiple bonds and resonance."
"We reviewed how to do conversion factors, including how to use the calculator to avoid mistakes. We talked about amu being the mass of an atom/molecule and about how 1 mole of an element is 6.02 x 10^23 molecules. The atomic mass on the periodic table can be both: the amu of an atom, and it can also be the g of an element per 1 mole of that element. We did a simple problem to find how many molecules are in a certain amount of g of an element. We also reviewed how to divide two fractions and other algebra review. We discussed the importance of units and showing work. The student has a good awareness of what he needs the most help with, and he seems willing to struggle through problems without giving up."
"Today, we worked on equilibrium chemistry and Gibbs free energy. We went over the different between standard free energy and the free energy of a reaction at any given point (similar to Q vs K for a reaction) and how a delta G or Q value can determine the direction a reaction is going to go. We also used ICE tables to solve equilibrium concentration problems and talked about different ways to use these. Overall, she seemed to really grasp the material today."
"The student and I worked on her learning guide to prepare for a chemistry test that she has tomorrow. We covered how to determine the limiting reagent, theoretical yield and percent yield. We also spent a little bit of time working on solutions, solubility and molarity - as that is the next section they will cover in class."
"Chemistry- Lewis Dot Diagrams, formal charge, covalent vs ionic bonds, resonance. Geometry- equation of a circle given three points, area. Reviewed general steps to approaching LDD and lengthy geometry problems. I suggested student to do the whole problem by himself to make sure he understands why we did each step in the geometry problem. Practice for LDD is key."
"During this session we focused on concentrations. We started off by looking at some of the ways that concentrations are described and how to find those ways. We covered percent mass as a way of describing how much of a solution the solute is. We also looked at percent volume. We spent some time discussing molarity and how to find it as well as if given the molarity and the volume of the solution you need how to find the amount of solute you need to add to the solution."
"We completed a review of electron configuration in the ground state, orbital, and abbreviated form. We also conducted an overview of the aufbau, Pauli exclusion principle, and Hund's Rule definition and application. Completed a review of orbital theory understanding the relationship with quantum numbers, orbitals, and sublevels. Conducted practice with electron configuration with elements and ions. We included corrections on wavelength and frequency concepts. Student needed to review the relationships with Bohr Model and Quantum Model."
"We covered how to find the empirical formula and went over some of his homework problems. Student has shown tremendous improvement in chemistry. He is starting to think critically on his own to solve different problems. I thought this session went better than normal."
"The student and I spent this session prepping her for her test. The test covered compound nomenclature, moles, molar mass, and percent mass. The student's teacher provided her with a study guide with practice questions to complete. The student was able to finish the study guide, needing my help to set up a few of the practice problems. At the end of the session we reviewed how to go from one unit to another i.e. moles to # of atoms, etc. The student told me that she scored over 100% on the last test I helped her prepare for."