Thursday, January 11, 2007
Thursday, Day 1
AP: we put Bonding to bed by reviewing various intermolecular and interparticle attractions and related them to various physical properties of substances.
We began Kinetics (Chapter 14 in the text) by discussing the factors that determine or influence the rate of a chemical reaction by affecting collision frequency (Temperature, Concentration, Pressure (for gases), Surface Area (for liquids and solids)) or collision force (Temperature). As Joe noted after class, the big FIFTH factor is the presence of a CATALYST which affects neither of the above two factors yet, by providing a different chemical mechanism/pathway that LOWERS the activation energy required for an EFFECTIVE collision, the EFFECTIVE collision frequency increases.
Notes to be posted later...
KINETICS NOTES are posted on edline.com for now...go there.
Honors: had our Bonding II exam; I haven't looked at them yet other than a glimpse at an ATROCITY: a couple of you COVALENTLY bonded a metal and a nonmetal!!! This is AFTER mandatory CORRECTIONS of that specific and unbelievable error from the last test. If you are just going through the motions and not learning anything from these corrections, you are guilty of wanton ignorance and your results will not improve.
There are two more tests for this quarter, next Thursday and the following Monday; that's it for the first half of the year.
Regents: had our Bonding II exam and our electrolyte lab, which we will be explaining this and next week.
Class average will be posted later...
RESULTS are in: class average was weak: 77 . Most who did poorly IGNORED my advice about DRAWING THINGS OUT and then looking for a matching answer. Learn from your mistakes or you will continue to make the same ones. The class WILL BE WRITING OUT full corrections on this test for hw.
We began Kinetics (Chapter 14 in the text) by discussing the factors that determine or influence the rate of a chemical reaction by affecting collision frequency (Temperature, Concentration, Pressure (for gases), Surface Area (for liquids and solids)) or collision force (Temperature). As Joe noted after class, the big FIFTH factor is the presence of a CATALYST which affects neither of the above two factors yet, by providing a different chemical mechanism/pathway that LOWERS the activation energy required for an EFFECTIVE collision, the EFFECTIVE collision frequency increases.
Notes to be posted later...
KINETICS NOTES are posted on edline.com for now...go there.
Honors: had our Bonding II exam; I haven't looked at them yet other than a glimpse at an ATROCITY: a couple of you COVALENTLY bonded a metal and a nonmetal!!! This is AFTER mandatory CORRECTIONS of that specific and unbelievable error from the last test. If you are just going through the motions and not learning anything from these corrections, you are guilty of wanton ignorance and your results will not improve.
There are two more tests for this quarter, next Thursday and the following Monday; that's it for the first half of the year.
Regents: had our Bonding II exam and our electrolyte lab, which we will be explaining this and next week.
Class average will be posted later...
RESULTS are in: class average was weak: 77 . Most who did poorly IGNORED my advice about DRAWING THINGS OUT and then looking for a matching answer. Learn from your mistakes or you will continue to make the same ones. The class WILL BE WRITING OUT full corrections on this test for hw.
# posted by C @ 2:01 PM 
