Thursday, January 18, 2007
Thursday, Day 5
AP: we got to the very heart of the unit today: we related a proposed reaction mechanism to the EXPERIMENTALLY DETERMINED rate law; by assigning the correct SLOW/RATE DETERMINING elementary step, we are able to see whether the rate law of the proposed mechanism is consistent with the EXPERIMENTALLY DETERMINED rate law.
We then showed both intuitively and mathematically how to determine the exponent on each reactant in a rate law expression.
This is an extremely important skill to develop and will definitely be a part II question on this year's AP exam (this skill is also tested on the Chem SAT II).
Tomorrow's test will involve everything that we covered in Kinetics so far as well as the unit on intermolecular forces especially the material that we covered since the last exam.
I will post the relevant kinetics hw on EDLINE.COM for now. Read relevant text Ch. 14 sections and do even # questions 14.40-14.48.
I won't be home until later to post the hw on the regular class webpage.
You must be logged in to edline in order for this link to work:
https://www.edline.net/files/40b81ca812a335d23745a49013852ec4/012405aphwa.pdf
Regents: we discussed induced dipole/ Van der Waal's/London dispersion attractions among NONPOLAR molecules. We drew pictures of how and why these dipoles are induced and how they create these relatively weak induced dipole attractions.
I will hand back your bonding exams tomorrow; corrections from that exam are due on Monday.
Honors: we had our Bonding Unit multiple choice exam today; early results look pretty good given that this unit test is actually more difficult than other unit tests because the subject matter depends on so much past knowledge from prior units.
Both periods have an average of about 90. That must mean that many of you are improving in your compound NAMING skills. GOOD times.
BOTH D and G periods must write FULL, NEAT, AND COMPLETE corrections for the last written-response bonding exam. Those corrections are due on Monday as grades will be entered on Monday night.
We then showed both intuitively and mathematically how to determine the exponent on each reactant in a rate law expression.
This is an extremely important skill to develop and will definitely be a part II question on this year's AP exam (this skill is also tested on the Chem SAT II).
Tomorrow's test will involve everything that we covered in Kinetics so far as well as the unit on intermolecular forces especially the material that we covered since the last exam.
I will post the relevant kinetics hw on EDLINE.COM for now. Read relevant text Ch. 14 sections and do even # questions 14.40-14.48.
I won't be home until later to post the hw on the regular class webpage.
You must be logged in to edline in order for this link to work:
https://www.edline.net/files/40b81ca812a335d23745a49013852ec4/012405aphwa.pdf
Regents: we discussed induced dipole/ Van der Waal's/London dispersion attractions among NONPOLAR molecules. We drew pictures of how and why these dipoles are induced and how they create these relatively weak induced dipole attractions.
I will hand back your bonding exams tomorrow; corrections from that exam are due on Monday.
Honors: we had our Bonding Unit multiple choice exam today; early results look pretty good given that this unit test is actually more difficult than other unit tests because the subject matter depends on so much past knowledge from prior units.
Both periods have an average of about 90. That must mean that many of you are improving in your compound NAMING skills. GOOD times.
BOTH D and G periods must write FULL, NEAT, AND COMPLETE corrections for the last written-response bonding exam. Those corrections are due on Monday as grades will be entered on Monday night.
# posted by C @ 1:18 PM 
