November 13, 2007: CH301 Random Musings—Every Problem for the Rest of the Course
1. Southpark does thermodynamics. You don’t produce two college age males without watching a lot of
Southpark. So you can imagine my dismay, when about four years ago, mid-November, 2002, while watching
episode 612, The Death Camp of Tolerance, I was deeply saddened to hear the following, utterly shocking
statement from Mr. Garrison:
[South Park Elementary, day, Garrison's class. Mr. Garrison enters, having previously set up a chemistry
experiment on the teacher's desk.]
Mr. Garrison: Okay, children, let's take our seats. Uh, apparently, none of you tried to get me
fired yesterday, so I guess we're just gonna have to go on and learn more today. [sits on a corner
of the desk] Now who can tells me what happens to water when we heat it up in the Bunsen
Butters: It evaporates.
Mr. Garrison: Good, Butters. Now if we take the glass tube of the Bunsen burner, we can also
see how other things react. [takes the tube in hand and walks over to Mr. Slave]
so let's look at an endothermic one….
Now the problem here is Mr. Garrison wasn’t “being the system”. If you will “be the system” you realize that
water evaporating is an endothermic process, because you are adding heat to the system (
H is positive.) He
should have said
Evaporation is an endothermic physical process
Anyway, you know it is hard enough trying to get students to “be the system” without having it contradicted by
cable television. So very sad.
2. Quiz 5 is next Tuesday before Thanksgiving during class. The question types are presented below:
Bomb calorimeter calculation
or bond energy to
calculate enthalpy changes
Predicting entropy change
Temperature dependence of
Ranking: Statistical thermodynamics, ranking molar entropy in a compound
Calculation: Statistical thermodynamics, Boltzmann formula calculation
Being able to do worksheets 11 and 12 should more than prepare you for this quiz.
Class if moving for this Thursday only.
I have agreed to let my class time on Thursday be given over to
preparing for a famous visiting speaker.
So famous, in fact, that I have to clear out at 2 even though the event
isn’t until 5 pm.
So my CH302 class will meet
in Payne Theatre in the Department of Theatre and
Dance Winship Bldg.
I have not been in the Winship Bldg in my 20 years on campus so this is a pretty big day
for me too.
To get to the building
you walk east (toward I35) past the MLK Statue on the East Mall--Winship
is the building to the north of the bus turnaround and east of the Jackson School.