Wednesday, December 10, 2008
Wednes-Day 1
AP Chem- we began the massive undertaking of learning all of the possible classic molecular (and polyatomic ion) geometries along with the "orbital hybridization" of the CENTRAL ATOM in each case. Though we also looked at the terminal atom orbitals involved in the bonds, generally it will suffice to know the CENTRAL ATOM hybridization so, good times.
Before we started the great chart, we looked at further exceptions to the octet rule in "electron deficient" compounds of H, B, and Be, which are stable with 2, 4, and 6 valence electrons in their molecules. You will see that Boron, in its compounds, is generally a good electron pair acceptor (because it still CAN, but doesn't HAVE TO, form another covalent bond), which makes it a good "Lewis acid".
Bio 6/7- We discussed the three functions of cartilage and then we discussed that muscle groups come in antagonistic pairs of flexors and extensors. We looked at the difference between ligaments (bone to bone, elastic) and tendons (muscle to bone, not elastic). We discussed tendonitis and arthritis, two diseases/injuries to the skeleto-muscular system.
We finished up our respiration/photosynthesis labs.
Bio 8- We discussed the three functions of cartilage and then we discussed that muscle groups come in antagonistic pairs of flexors and extensors. We looked at the difference between ligaments (bone to bone, elastic) and tendons (muscle to bone, not elastic).
Before we started the great chart, we looked at further exceptions to the octet rule in "electron deficient" compounds of H, B, and Be, which are stable with 2, 4, and 6 valence electrons in their molecules. You will see that Boron, in its compounds, is generally a good electron pair acceptor (because it still CAN, but doesn't HAVE TO, form another covalent bond), which makes it a good "Lewis acid".
Bio 6/7- We discussed the three functions of cartilage and then we discussed that muscle groups come in antagonistic pairs of flexors and extensors. We looked at the difference between ligaments (bone to bone, elastic) and tendons (muscle to bone, not elastic). We discussed tendonitis and arthritis, two diseases/injuries to the skeleto-muscular system.
We finished up our respiration/photosynthesis labs.
Bio 8- We discussed the three functions of cartilage and then we discussed that muscle groups come in antagonistic pairs of flexors and extensors. We looked at the difference between ligaments (bone to bone, elastic) and tendons (muscle to bone, not elastic).
# posted by C @ 4:52 PM 
