Thursday, November 6, 2008
Thurs-Day 1
AP Chem- we saw the various gas laws graphically as we sketched the data from the tables we had developed from the ideal gas equation. Each law is really just the ideal gas law with certain variables held constant.
We then EXPLAINED in terms of "kinetic-molecular theory", which is just a fancy term for molecular collision frequency and kinetic energy of the collisions, Boyle's Law.
I posted the full explanation of each of the other gas laws. Peruse them and let me know if there is any process that does not make sense to you.
We also discussed the natural "Bolzmann distribution" of molecular speeds at a given temperature and saw how different gases are traveling at different speeds at a given temperature. That is because (Kelvin) temperature is directly proportional to the average kinetic energy of the molecules/particles of a substance and not just the speed of the molecules/particles. So, the mass of the molecules accounts for the different average speeds of different molecules even when they are at the same temperature.
We used this information to derive Graham's Law of Effusion (diffusion through a pinhole).
Bio 6/7- we reviewed our last exam and went over some important test-taking skills (pre-phrasing answers, writing/drawing out predicted answers, legal cheatsheets, etc.).
We then continued our discussion of transcription of DNA to mRNA and then translation of the mRNA code/pattern into a protein (specific number and sequence of amino acids).
I posted the video that we saw today on Blackboard.
We finished up our plant and animal mitosis lab, which you will hand in tomorrow after we discuss some of the questions.
Bio 8 -we reviewed our last exam and went over some important test-taking skills (pre-phrasing answers, writing/drawing out predicted answers, legal cheatsheets, etc.).
We then continued our discussion of transcription of DNA to mRNA and then translation of the mRNA code/pattern into a protein (specific number and sequence of amino acids).
I posted the video that we saw today on Blackboard.
We then EXPLAINED in terms of "kinetic-molecular theory", which is just a fancy term for molecular collision frequency and kinetic energy of the collisions, Boyle's Law.
I posted the full explanation of each of the other gas laws. Peruse them and let me know if there is any process that does not make sense to you.
We also discussed the natural "Bolzmann distribution" of molecular speeds at a given temperature and saw how different gases are traveling at different speeds at a given temperature. That is because (Kelvin) temperature is directly proportional to the average kinetic energy of the molecules/particles of a substance and not just the speed of the molecules/particles. So, the mass of the molecules accounts for the different average speeds of different molecules even when they are at the same temperature.
We used this information to derive Graham's Law of Effusion (diffusion through a pinhole).
Bio 6/7- we reviewed our last exam and went over some important test-taking skills (pre-phrasing answers, writing/drawing out predicted answers, legal cheatsheets, etc.).
We then continued our discussion of transcription of DNA to mRNA and then translation of the mRNA code/pattern into a protein (specific number and sequence of amino acids).
I posted the video that we saw today on Blackboard.
We finished up our plant and animal mitosis lab, which you will hand in tomorrow after we discuss some of the questions.
Bio 8 -we reviewed our last exam and went over some important test-taking skills (pre-phrasing answers, writing/drawing out predicted answers, legal cheatsheets, etc.).
We then continued our discussion of transcription of DNA to mRNA and then translation of the mRNA code/pattern into a protein (specific number and sequence of amino acids).
I posted the video that we saw today on Blackboard.
# posted by C @ 4:31 PM 
