Monday, January 22, 2007
Monday, Day 7 (UPDATED with test results...)
EVERYBODY LISTEN UP!: There ARE lab questions ON THE REGENTS EXAM!!!
Honors: we had our Lab test today, results within the hour...
UPDATE: Both classes did considerably worse than the past two years' classes! Again, NOBODY at extra help on Friday after rah-rah pep rally shows how another missed opportunity for preparation that is sorely needed will continue to result in an abundance of errors. These errors were made on MULTIPLE CHOICE questions that were ALL DIRECTLY AND SOLELY FROM THE OBJECTIVES, which were based on problems that we have repeatedly done in CLASS.
WHAT A COINCIDENCE!!!! The THREE students who obviously prepared and then, on Saturday, emailed me their work for clarification all scored above a 96!!!
D Period: 80
G Period: 78
Way to end the quarter.
tomorrow, we continute with intermolecular attractions and their effect on physical properties. All of the explanations that we have been doing and the explanations that we are about to cover will be on the bonding/attractions written unit test next week; take excellent notes and stay focused in class.
Regents:
more on intermolecular attractions and their relationship to melting/boiling points and solubility in the next few lessons.
we did our Lab test today; results soon...
UPDATE: the results are in. I should have know from the ghost-town of extra help last week that the class was not preparing.
Expect a true failing grade (below 65) if you were anywhere near failure before this test. The grades on most tests were atrocious; clearly the result of a total lack of preparation/practice and any kind of note-taking in class!!! The fact that , EVERY DAY, I have to tell many of you to take notes in class demonstrates the lack of maturity and seriousness of many in this class! The fact that I can barely get many of you to EVEN LOOK AT THE BLACKBOARD OR SMARTBOARD, unless I am BURNING something, demonstrates that many of you have a severe problem that undermines and retards your academic ability! That problem is LAZINESS and WANTON ignorance and, if you do not rid yourself of those flaws, you will fail, plain and simple. A full ONE-THIRD of the class didn't even do a simple assignment of copying bonding-term definitions.
You will definitely fail the rest of the year and the course if this pathetic lack of preparation continues!
Be ready to work tomorrow!!!
AP: we did more rate law problems from data that wasn't so cookie-cutter-nice via the ratio method and saw that you ultimately get two equations with two unknowns that you just combine via division to make one of the variables drop out. You then solve for the exponent of one reactant in the rate law. Then, plugging in that found exponent, you solve for the other one (assuming two reactants in the rate law).
We then saw that rate laws can actually have negative exponents; rate laws can also have fractional exponents. These can still be shown to be related to the slow/rate determining step usually via a fast equilibrium step just before the rate determining step.
We then finished the typical question series in a problem: solve for k, with units of course; solve for the rate of reaction in a different experiment at the same temperature with different concentrations of reactants.
Tomorrow, we launch into the all-powerful "time-dependent" rate law equations for zeroth, first, and second order reactions!
Honors: we had our Lab test today, results within the hour...
UPDATE: Both classes did considerably worse than the past two years' classes! Again, NOBODY at extra help on Friday after rah-rah pep rally shows how another missed opportunity for preparation that is sorely needed will continue to result in an abundance of errors. These errors were made on MULTIPLE CHOICE questions that were ALL DIRECTLY AND SOLELY FROM THE OBJECTIVES, which were based on problems that we have repeatedly done in CLASS.
WHAT A COINCIDENCE!!!! The THREE students who obviously prepared and then, on Saturday, emailed me their work for clarification all scored above a 96!!!
D Period: 80
G Period: 78
Way to end the quarter.
tomorrow, we continute with intermolecular attractions and their effect on physical properties. All of the explanations that we have been doing and the explanations that we are about to cover will be on the bonding/attractions written unit test next week; take excellent notes and stay focused in class.
Regents:
more on intermolecular attractions and their relationship to melting/boiling points and solubility in the next few lessons.
we did our Lab test today; results soon...
UPDATE: the results are in. I should have know from the ghost-town of extra help last week that the class was not preparing.
Expect a true failing grade (below 65) if you were anywhere near failure before this test. The grades on most tests were atrocious; clearly the result of a total lack of preparation/practice and any kind of note-taking in class!!! The fact that , EVERY DAY, I have to tell many of you to take notes in class demonstrates the lack of maturity and seriousness of many in this class! The fact that I can barely get many of you to EVEN LOOK AT THE BLACKBOARD OR SMARTBOARD, unless I am BURNING something, demonstrates that many of you have a severe problem that undermines and retards your academic ability! That problem is LAZINESS and WANTON ignorance and, if you do not rid yourself of those flaws, you will fail, plain and simple. A full ONE-THIRD of the class didn't even do a simple assignment of copying bonding-term definitions.
You will definitely fail the rest of the year and the course if this pathetic lack of preparation continues!
Be ready to work tomorrow!!!
AP: we did more rate law problems from data that wasn't so cookie-cutter-nice via the ratio method and saw that you ultimately get two equations with two unknowns that you just combine via division to make one of the variables drop out. You then solve for the exponent of one reactant in the rate law. Then, plugging in that found exponent, you solve for the other one (assuming two reactants in the rate law).
We then saw that rate laws can actually have negative exponents; rate laws can also have fractional exponents. These can still be shown to be related to the slow/rate determining step usually via a fast equilibrium step just before the rate determining step.
We then finished the typical question series in a problem: solve for k, with units of course; solve for the rate of reaction in a different experiment at the same temperature with different concentrations of reactants.
Tomorrow, we launch into the all-powerful "time-dependent" rate law equations for zeroth, first, and second order reactions!
# posted by C @ 5:48 PM 
