Tuesday, November 29, 2011

 

Tues-Day 1

AP Chem - we applied our knowledge of the causes of successive IE's to a specific example, and predicted the group and type of compound (and formula) of an unknown element.
We then defined electronegativity, explained the trends in electronegativity across periods (left to right) and down groups, and showed its effect on element behavior and classification as metal or nonmetal.
We then defined electron affinity, and explained the few anomalies in group 2 and 15/5A.

Bio - we discussed the uses/purposes of glucose synthesis in plants and green algae.
We then discussed the various light energy absorbing/trapping pigments inside the granum in a plant cell chloroplast. We showed and explained the technique of chromatography that is used to separate the mixture of pigments that can be extracted from a plant. The greater the variety of pigment colors in a plant, the more types of colors of photons/light energy that can be absorbed, thus the more total energy for photosynthesis that can be absorbed.
We then began to discuss the factors that affect the rate of photosynthesis, and how and why they do so.



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