Unit 5 - The Thermodynamic Model of Chemical Reactions
There will always be more to the
"story" of Chemisty and in this unit, thermodynamics is the "more" that
we will add to our growing understanding of chemical change. We will
learn that the change in temperature that occurs when a reaction takes
place is associated with the energy required to break bonds and reform
new bonds. We will learn how to measure this energy using a method
known as calorimetry. And we will learn how to use energy and entropy
to predict whether or not a given change will take place. Our ideas
will apply to the very small - to atoms and particles - and apply to
the very large - to the universe as a whole.
will be testing on about the 9th block of the unit. There will be
several labs, the usual battery of WebAssigns, and a quiz at the
mid-point of the unit. Ideas are both conceptual and mathematical.
Bring your calculator every day as you will be using it quite regularly.
Final Word on the Final Exam
The Final Exam has been completed and
copied. Here's what you can expect. There are 50 Mulitple Choice
Questions worth 1 point each. There are 11 long answer questions worth
2 points each. Your 10 best long answer questions will be counted. That
brings the total possible to 70 points. You will have 90 minutes to
complete this exam. "If you want this ... you GOT this!"
Unit 5 Scheduling
Daily schedules and WebAssign schedules
for Unit 5 will be updated during Final Exam week. We are a long way
from finishing it ... but we are two days into the unit. So the end
will come a little quicker than you might expect. So will the middle
... meaning the day of the pop quiz.
I'm Not Your Guidance Counselor, But ...
Hey Students! I'm not your guidance
counselor, but when it comes to recommending a science course for your
next two years of school at GBS, I might know a thing or two that your
counselor doesn't. For one, I know you're all STEM kids and I know that
means that you like science and other technical classes. While many
of you undoubtedly have great talent in other academic domains, some of
you know that a science-engineering-math career is in your future.
Don't be bashful if you wish to overdose on our science and engineering
options. Some counselors might warn you against this, arguing that you
will become a little unbalanced for doing so and could grow a couple of
horns in the middle of your forehead. Those are words of a
non-science-minded guidance counselor. The words of your science
teacher are this: In 31 years of teaching, I've never seen a
science-minded student taking a bunch of science courses that they love
begin to grow alien body parts; rather, I've only seen very happy and
fulfilled science students who get to do the things they love doing.
You don't need anyone's permission to enroll in a lot of science
courses. If it's your thing, then go for it!
Mr. H's Little Secret
Pssss. Hey bud! I have a secret to
share. Now that you know how to calculate the molar mass, here's a
little cheat you should be permitted to use. It's called a Molar Mass
Calculator and you will find several by following the links below. You type in the
formula and it calculates the molar mass.
FREE: A Chemistry Study Tip
Stretching out your studies over a
lengthy period of time so that there are many "visits" of the material
is far better than lengthier, less-frequent sessions of intense
studies. So what's this have to do with Chemistry class? I'm going to
A little Chemistry each day helps. Your homework usually includes two
WebAssigns - one is a "looking ahead" WebAssign in which you read about
something that is coming up next. The other is a "looking behind"
WebAssign in which you practice using something that we just learned in
class. So why not do the "Looking behind" WebAssign on the evening of
the Blue day - the day you were presented with the material. And then
do the "Looking ahead" WebAssign on the evening of the Gold day - the
evening just prior to when we cover the material the next morning.
Hopefully that makes sense ... and it gives you a little Chemistry
every day. =SIGH=
Don't fall behind in chemistry at this point. The snowball effect will occur.
That is, you will feel like you're running down a snowy hill with a
rolling snowball rolling behind you. The further you go, the bigger the
snowball becomes until finally ... .
Hopefully, you get my drift.
Come in and get some help when you need it. Use the referenced web
pages and YouTube videso as well. (I highly recommend Tyler DeWitt's
page changes nearly every day; re-load
or refresh to receive the most recent schedule.
|>> Monday, January 13 <<
- Can you explaini _______ (semester 1 topic)?
- How can the quantity of heat transferred between systems and surroundings be measured?
- Any Questions on Semester 1 Chemistry? (up to 45 minutes)
- Review Heat and Temperature (pp. 1-2)
- Review Calorimetry and Energy Change; pp. 7-8, Q#1, #2
- Work on Lab T2 Completion
- Work on Lab T1 Completion
Time in Class
| >> Wednesday, January 22 <<
We will discuss bond energy, enthalpy change and chemical reactions
(pp. 11-14). We will begin our discussion of thermal stoichiometry. We
will will do Lab T5 on the Heat of Combustion.