Monday, December 15, 2008
Mon-Day 1
AP Chem- CHECK OUT the two descriptive chem sets (with answers) on Blackboard...very good practice for Wednesday's "replacement" quiz...double entendre intended!
We clarified previous general molecule/ion structures: AX2, AX3, and AX2E by showing that the proper Lewis structure SHOWS you the number of "electron DOMAINS/REGIONS" around the CENTRAL ATOM.
That, BY ITSELF, tells you BOTH the number of hybrid orbitals required AND the electronic geometry around the central atom. So getting the Lewis structure (starting with the valence electron counting, etc.) right is KEY to all subsequent steps.
We covered AX4, AX3E, AX2E2, AX5, AX4E, AX3E2, AX2E3, and AX6. We then did a lab simulation to help you visualize in 3-D the bond angles and the electronic and molecular geometries. Only the FIVE-electron-domain cases have more than one bond angle that is significantly different from the others (120 and 90 degrees for equatorial - equatorial and equatorial - axial, respectively).
We also saw that lone pairs of electrons repel bonding pairs of electrons farther away than do other bonding pairs of electrons.
Bio 6/7- it's official: the unit test is this Wednesday, DECEMBER 17th. Sorry that I didn't have the correct date before this weekend.
I'll collect the objectives tomorrow anyway (you may want to make a copy for yourself) and I'll post my answers on Blackboard tomorrow, also.
Bring in your photo/respiration test tomorrow so that we can go over some test skills that you can apply to the upcoming test.
We discussed the various functions of skin, specifically the structures of each of the three layers that comprise/make up skin and the function of each structure. Regulation of temperature, immune regulation, general protection against environmental chemicals and heat are some of the functions that we discussed.
We discussed a "negative BIOFEEDBACK" loop in which a person is caused to sweat when s/he is too hot, which then triggers cooling and a negative signal so that sweating stops when temperature homeostasis is reached (otherwise you would get too cold).
We did a lab that that tested the effect of sweating/water on the "skin" of the test tube (INDEPENDENT VARIABLE) on the rate of temperature decrease/cooling (the DEPENDENT VARIABLE i.e. what was being measured!).
We will do an antagonistic muscle pair lab tomorrow.
Bio 8- it's official: the unit test is this Wednesday, DECEMBER 17th. Sorry that I didn't have the correct date before this weekend.
I'll collect the objectives tomorrow anyway (you may want to make a copy for yourself) and I'll post my answers on Blackboard tomorrow, also.
Bring in your photo/respiration test tomorrow so that we can go over some test skills that you can apply to the upcoming test.
We discussed the various functions of skin, specifically the structures of each of the three layers that comprise/make up skin and the function of each structure. Regulation of temperature, immune regulation, general protection against environmental chemicals and heat are some of the functions that we discussed.
We did a lab that that tested the effect of sweating/water on the "skin" of the test tube (INDEPENDENT VARIABLE) on the rate of temperature decrease/cooling (the DEPENDENT VARIABLE i.e. what was being measured!).
We will do an antagonistic muscle pair lab tomorrow.
We clarified previous general molecule/ion structures: AX2, AX3, and AX2E by showing that the proper Lewis structure SHOWS you the number of "electron DOMAINS/REGIONS" around the CENTRAL ATOM.
That, BY ITSELF, tells you BOTH the number of hybrid orbitals required AND the electronic geometry around the central atom. So getting the Lewis structure (starting with the valence electron counting, etc.) right is KEY to all subsequent steps.
We covered AX4, AX3E, AX2E2, AX5, AX4E, AX3E2, AX2E3, and AX6. We then did a lab simulation to help you visualize in 3-D the bond angles and the electronic and molecular geometries. Only the FIVE-electron-domain cases have more than one bond angle that is significantly different from the others (120 and 90 degrees for equatorial - equatorial and equatorial - axial, respectively).
We also saw that lone pairs of electrons repel bonding pairs of electrons farther away than do other bonding pairs of electrons.
Bio 6/7- it's official: the unit test is this Wednesday, DECEMBER 17th. Sorry that I didn't have the correct date before this weekend.
I'll collect the objectives tomorrow anyway (you may want to make a copy for yourself) and I'll post my answers on Blackboard tomorrow, also.
Bring in your photo/respiration test tomorrow so that we can go over some test skills that you can apply to the upcoming test.
We discussed the various functions of skin, specifically the structures of each of the three layers that comprise/make up skin and the function of each structure. Regulation of temperature, immune regulation, general protection against environmental chemicals and heat are some of the functions that we discussed.
We discussed a "negative BIOFEEDBACK" loop in which a person is caused to sweat when s/he is too hot, which then triggers cooling and a negative signal so that sweating stops when temperature homeostasis is reached (otherwise you would get too cold).
We did a lab that that tested the effect of sweating/water on the "skin" of the test tube (INDEPENDENT VARIABLE) on the rate of temperature decrease/cooling (the DEPENDENT VARIABLE i.e. what was being measured!).
We will do an antagonistic muscle pair lab tomorrow.
Bio 8- it's official: the unit test is this Wednesday, DECEMBER 17th. Sorry that I didn't have the correct date before this weekend.
I'll collect the objectives tomorrow anyway (you may want to make a copy for yourself) and I'll post my answers on Blackboard tomorrow, also.
Bring in your photo/respiration test tomorrow so that we can go over some test skills that you can apply to the upcoming test.
We discussed the various functions of skin, specifically the structures of each of the three layers that comprise/make up skin and the function of each structure. Regulation of temperature, immune regulation, general protection against environmental chemicals and heat are some of the functions that we discussed.
We did a lab that that tested the effect of sweating/water on the "skin" of the test tube (INDEPENDENT VARIABLE) on the rate of temperature decrease/cooling (the DEPENDENT VARIABLE i.e. what was being measured!).
We will do an antagonistic muscle pair lab tomorrow.
# posted by C @ 11:11 AM 
