Wednesday, December 21, 2011
Wednes-Day 1
AP Chem - we further discussed and contrasted delocalized pi bonding and local/regular pi bonding, emphasizing the greater stabilization when 2 electrons are shared among more than two nuclei.
We looked at a complex molecule that contained multiple pi bonds, and showed that pi bonds prevent rotational freedom about the atoms involved in the pi bond. Thus, pi bonds must be broken for a cis isomer to rotate to a trans isomer, and vice versa.
We also further discussed "dative" or "coordinate covalent" bonds, which were named merely to show that one of the two atoms that bond is contributing both electrons in the bond.
Study for tomorrow's bonding/molecular geometry/IMFA exam.
We looked at a complex molecule that contained multiple pi bonds, and showed that pi bonds prevent rotational freedom about the atoms involved in the pi bond. Thus, pi bonds must be broken for a cis isomer to rotate to a trans isomer, and vice versa.
We also further discussed "dative" or "coordinate covalent" bonds, which were named merely to show that one of the two atoms that bond is contributing both electrons in the bond.
Study for tomorrow's bonding/molecular geometry/IMFA exam.
Bio - unit exam on Locomotion, the skeletal, muscular, and integumentary systems including regulation of body temperature via perspiration and increased circulation or via shivering and decreased circulation.
Today we continued our discussion of body temperature regulation when a person is in a cold environment.
We then covered common diseases (and their causes) of the muscular, skeletal, and integumentary systems.
There are more practice files, and a review of proper scientific investigation, posted on Edline.# posted by C @ 6:32 PM 
