Thursday, December 3, 2009
Wednes-Day 1
Bio 3/6 - We discussed the morphology/structure and functions of the parts of a typical plant leaf, showing how the various layers function individually and then work together to ensure that the plant can efficiently maintain homeostasis and perform photosynthesis.
We started a lab investigating the effect of (independent variable) varying light intensity on the (dependent variable) rate of photosynthesis as measured by the rate of production of oxygen bubbles, one of the products of photosynthesis.
We started a lab investigating the effect of (independent variable) varying light intensity on the (dependent variable) rate of photosynthesis as measured by the rate of production of oxygen bubbles, one of the products of photosynthesis.
AP Chem - Peruse (the OPPOSITE of skim) the class handout on the explanations of the periodic trends and let me know if you have any questions about them on Monday.
We continued our comparison and explanation of atomic sizes among isoelectronic species (atoms or ions) in terms of (1) Zeff , (2), # of OPEL's, (3) and electron-electron repulsion in the valence shell.
We then used those same factors to explain the Periodic Trends in First Ionization Energy.
We saw that metallic elements have low Zeff on their valence electron(s) and thus have low first IE and that nonmetallic elements have relatively high Zeff on their valence electron(s) and thus have higher first IE's.
We continued our comparison and explanation of atomic sizes among isoelectronic species (atoms or ions) in terms of (1) Zeff , (2), # of OPEL's, (3) and electron-electron repulsion in the valence shell.
We then used those same factors to explain the Periodic Trends in First Ionization Energy.
We saw that metallic elements have low Zeff on their valence electron(s) and thus have low first IE and that nonmetallic elements have relatively high Zeff on their valence electron(s) and thus have higher first IE's.
# posted by C @ 10:51 PM 
