Wednesday, December 7, 2011

 

Wednes-Day 1

AP Chem - we focused on the causes of extreme dipole to extreme dipole attractions between molecules that have HIGHLY PARTIALLY charged regions. These high partial charge regions are caused by the highly unequal sharing of bonded electrons between H and F,O, or N within a molecule.
The second requirement for these attractions has to do with the distance factor of Coulomb's Law; F, O, and N are the only sufficiently small highly electronegative elements to be able to cause "close proximity" of adjacent highly charged regions of adjacent molecules.

We then began the all-important skill of drawing accurate Lewis dot structures of molecules.
There is ONLY ONE way to draw these correctly.
That is the way we will learn to do so, and then we will be able to predict the molecule's geometry, polarity, and physical properties!

Bio - we compared and contrasted cellular respiration in animals under conditions of sufficient and insufficient oxygen.
We then took practice tests on photosynthesis and respiration, practicing multiple choice test-taking skills.
We also observed the results of the yeast alcoholic fermentation controlled demonstration.



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