Wednesday, December 3, 2008
Wednes-Day 2
AP Chem- we covered (and you really should use them) Thermo test-taking tips: make sure that you carefully IDENTIFY and LABEL, directly in the question, all data and relate/LABEL those values so that you can directly plug them into the thermo formula. Draw a picture so that you can SEE where the energy (heat) is flowing AND whether any WORK is being done by GASES.
We then reviewed some of descriptive chem reactions and started to expand our repertoire by considering cationic and anionic single replacement redox reactions.
There are an insane number of practice problems online for tomorrow's test. You will see very similar problems, naturally, on tomorrow's exam so try to do as many practice problems as you can; be very meticulous/fastidious and check your work.
Bio 6- We are done with the unit objectives except for #'s 19, 21, and 22 (so those will not be graded on your HW) that involve lab work; therefore, we will be doingmostly lab work for the next THREE class periods. Get ready for labs that WORK.
We discussed the connection between the potential SIZE of an organism and its ability to extract energy from glucose aerobically or anaerobically.
We then did a BIG PICTURE connection between photosynthesis and cellular respiration, showing the relationship between the products of photosynthesis (glucose and oxygen) and the reactants of aerobic respiration (glucose and oxygen!) and vice versa.
Bio 7/8- We are done with the unit objectives except for #'s 19, 21, and 22 (so those will not be graded on your HW) that involve lab work; therefore, we will be doing mostly lab work for the next THREE class periods. Get ready for labs that WORK.
We discussed the connection between the potential SIZE of an organism and its ability to extract energy from glucose aerobically or anaerobically.
We then did a BIG PICTURE connection between photosynthesis and cellular respiration, showing the relationship between the products of photosynthesis (glucose and oxygen) and the reactants of aerobic respiration (glucose and oxygen!) and vice versa.
We discussed the "rate of photosynthesis" lab in which we measured the rate of photolysis, which is the first step of photosynthesis in which light energy is absorbed by the chlorophylls in the chloroplast and some of that energy is used to "split" water into hydrogen and oxygen. The oxygen gas then diffuses from the plant cell and out of the plant, which we saw bubbling through the water in the test tube. We saw that, as we increased the light intensity (decreased distance between plant and light source!) and also as we increased the concentration of CO2 in the plant's surroundings (by adding sodium CARBONate), we increased the rate of photolysis and photosynthesis!
We then reviewed some of descriptive chem reactions and started to expand our repertoire by considering cationic and anionic single replacement redox reactions.
There are an insane number of practice problems online for tomorrow's test. You will see very similar problems, naturally, on tomorrow's exam so try to do as many practice problems as you can; be very meticulous/fastidious and check your work.
Bio 6- We are done with the unit objectives except for #'s 19, 21, and 22 (so those will not be graded on your HW) that involve lab work; therefore, we will be doingmostly lab work for the next THREE class periods. Get ready for labs that WORK.
We discussed the connection between the potential SIZE of an organism and its ability to extract energy from glucose aerobically or anaerobically.
We then did a BIG PICTURE connection between photosynthesis and cellular respiration, showing the relationship between the products of photosynthesis (glucose and oxygen) and the reactants of aerobic respiration (glucose and oxygen!) and vice versa.
Bio 7/8- We are done with the unit objectives except for #'s 19, 21, and 22 (so those will not be graded on your HW) that involve lab work; therefore, we will be doing mostly lab work for the next THREE class periods. Get ready for labs that WORK.
We discussed the connection between the potential SIZE of an organism and its ability to extract energy from glucose aerobically or anaerobically.
We then did a BIG PICTURE connection between photosynthesis and cellular respiration, showing the relationship between the products of photosynthesis (glucose and oxygen) and the reactants of aerobic respiration (glucose and oxygen!) and vice versa.
We discussed the "rate of photosynthesis" lab in which we measured the rate of photolysis, which is the first step of photosynthesis in which light energy is absorbed by the chlorophylls in the chloroplast and some of that energy is used to "split" water into hydrogen and oxygen. The oxygen gas then diffuses from the plant cell and out of the plant, which we saw bubbling through the water in the test tube. We saw that, as we increased the light intensity (decreased distance between plant and light source!) and also as we increased the concentration of CO2 in the plant's surroundings (by adding sodium CARBONate), we increased the rate of photolysis and photosynthesis!
# posted by C @ 2:05 PM 
