Wednesday, April 22, 2009
Tues-Day 1
AP Chem-discussed the proper labeling of an electrochemical cell and the purpose of each of its components. We learned the proper shorthand notation to represnet an electrochemical cell; the notation begins with the anode and ends with the cathode; phases, concentration, and partial pressures must be included.
We discussed SHE, the standard hydrogen electrode half cell, which is used in conjunction with another half cell to determine the standard electrode potential of that half cell. The voltage assigned to SHE is 0.00 V so all other half cell potentials are measured relative to that of the SHE.
We looked at the overall reaction of an electrochemical cell and made Le Chatelier predictions based on changes in concentration of ions in solution in each half cell; we used these predictions to infer what would happen to the cell voltage/potential under specific non-standard conditions.
Bio 6- we discussed the main sources of evidence for Evolution Theory: comparative embryology, cytology (cells), anatomy, and (most importantly) biochemistry as well as the geologic/fossil record. The powerpoints from that lecture are posted on Blackboard.
Bio 7/8- we discussed the main sources of evidence for Evolution Theory: comparative embryology, cytology (cells), anatomy, and (most importantly) biochemistry as well as the geologic/fossil record. The powerpoints from that lecture are posted on Blackboard.
We then reviewed the modern genetics test.
We discussed SHE, the standard hydrogen electrode half cell, which is used in conjunction with another half cell to determine the standard electrode potential of that half cell. The voltage assigned to SHE is 0.00 V so all other half cell potentials are measured relative to that of the SHE.
We looked at the overall reaction of an electrochemical cell and made Le Chatelier predictions based on changes in concentration of ions in solution in each half cell; we used these predictions to infer what would happen to the cell voltage/potential under specific non-standard conditions.
Bio 6- we discussed the main sources of evidence for Evolution Theory: comparative embryology, cytology (cells), anatomy, and (most importantly) biochemistry as well as the geologic/fossil record. The powerpoints from that lecture are posted on Blackboard.
Bio 7/8- we discussed the main sources of evidence for Evolution Theory: comparative embryology, cytology (cells), anatomy, and (most importantly) biochemistry as well as the geologic/fossil record. The powerpoints from that lecture are posted on Blackboard.
We then reviewed the modern genetics test.
# posted by C @ 5:47 AM 
