Tuesday, December 9, 2008

 

Tues-Day 2

AP Chem -we covered Lewis Structures of molecules that have "expanded octets" due to their available (hybridized) "d" orbitals enabling bonding of more than 8 electrons.
We also covered "odd-electron" molecules and saw that the central atom typically gets CLOSE to an octet: 7 valence electrons.
We discussed the relatively high reactivity of odd-electron "radical" molecules and saw an example of that: smog. On cool days, equilibrium favors the bonding of brown nitrogen dioxide molecules to form colorless dinitrogen tetroxide molecules.

Bio 6- We began our new unit on regulation via LOCOMOTION. We discussed the adaptive purposes of locomotion and the structures that simple and complex organisms have for that process. We discussed the various functions of bones/skeletons and then looked at various bone joints.

Bio 7/8- We began our new unit on regulation via LOCOMOTION. We discussed the adaptive purposes of locomotion and the structures that simple and complex organisms have for that process. We discussed the various functions of bones/skeletons and then looked at various bone joints.
We then almost finished the discussion of our past two labs, which will be finished and collected on Thursday.



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