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Courses Chemistry pre-course guidance?

  1. Jan 8, 2008 #1

    Physics_UG

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    So I have been teaching this university chemistry pre-course that is meant to review all of the pre-req stuff needed for uchem 1 and the course is supposed to touch on some of the stuff the students will see in uchem 1. The course is 4 lectures, 3 hours/lecture. The last two lectures I covered really basic stuff. On the first lecture I covered all of the sig fig rules, scientific notation, SI system, unit conversions, and dimensional analysis. On the second lecture I discussed some of the experimental evidence that gives us a picture of the atomic structure (Thomson experiment, Rutherford experiment, etc), the definition of a mole, the definition of the amu and the standards used to define both quantities, and then I did a ton of stoichiometry problems and had them pair up in groups to work some on their own. I covered mass-mole, mass-molecule, and molecule-mole conversions, chemical equation balancing, stoichiometric calculations given a chemical reaction, limiting reagents, percent yield, and mass percent calculations. I also talked about the rules for naming binary ionic, binary covalent, and polyatomic atoms.

    My question is, how do you recommend I spend the last 6 hours of lecture time in this course? Tomorrow I was planning on covering the bohr model and the qualtization of energy levels, and then I was going to discuss atomic/quantum orbital mechanics and how the orbitals fill. Then I figure I will talk about lewis structures, molecular orbital theory (orbital hybridization, sigma and pi bonds, etc), and maybe get into VSEPR theory if time permits. I will also go into more detail on non-covalent vs. polar-covalent vs. ionic bonding.

    Friday I plan on covering the gas laws, solution equilibrium, the equilibrium constant, le chatlier's principle, calorimetry (hess law, heat capacity, etc), etc.

    Do you think this is a good plan? Are there some things missing that I should consider adding in?

    Thanks
     
  2. jcsd
  3. Jan 8, 2008 #2
    You hit my opinion right on the nose! I know a lot of people who struggle with part of Chemistry, it would definitely benefit someone going into U-Chem. Especially hybridization.
     
  4. Jan 11, 2008 #3

    Physics_UG

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    Well, the course is over. It went decent, but I think everything I explained came out garbled. lol. MY explanations seemed clear to me in my head when I explained the concepts to myself before giving the lectures, but when I got in front of the group and began speaking everything came out garbled...especially the quantum/orbital mechanics...I was getting lots of blank stares there.

    All in all, I was rather disappointed in my performance. I guess it is a lesson learned, and it was good experience for me nonetheless.
     
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