Monday, December 15, 2008

AP CHEM: One more thing...

Now you should get this:



CS

AP CHEM: Day 72 - Links for you

I'll leave it up to you to find some general links for EM spectrum uses. Here are a couple of useful links I've found for you to explore and review some of our Sunday and Monday discussions:

Photoelectric effect - Try here. This is a link to the Physics Hypertextbook. Worth a look around. (No, Andrew, it's not Web 2.0. Still worth a look.)

Heisenberg's Uncertainty Principle - This is a link to a writeup of Heisenberg's famous thought experiment to illustrate a basis for understanding the principle. It's not quite right, but it's a good start. We'll be talking about this more on Wednesday.

FM Radio - This is the link (it's to Armenia, not Kyrgyzstan) I referenced in talking about FM radio today. The drawing in Figure 1 should be a little familiar. If you want a look at some circuit diagrams for mono and stereo equipment, keep scrolling down.

I have yet to find a good layman's explanation for radio transmission - either I get the general idea I showed to you last year, or I get really technical "here's how to make a radio during Physics Lab" stuff. The link above is about as middle-ground as I've found. If you find something better, please let me know.

Here's a general information link on how radio broadcasting works from HowStuffWorks. If you click through the sections, you'll find a list of broadcast bands for various applications.

Rutherford's Scattering Experiment - Here is an applet for you to play with. Some good discussion too.

CS


Sunday, December 14, 2008

CHEM: Week 16 - Forecasting

For the week immediately prior to Winter Break, there will be no major assignments due. Last week was plenty busy.

This week, the major topics will be:

Light - the particle theory
Electromagnetic Spectrum
Atomic Spectra
Bohr's model

Fifth period is still a bit behind, so their material will be a bit compressed. Everyone should be on the same page by Monday's end.

You will have homework due every day this week. The Light Worksheets will be your major opportunity to practice with the light equations and expand your understanding of the behavior of light as needed to explain Bohr's concept of the atom. Fifth period will have to turn in their homework in on Friday to my office door before they go home for break. Third period will have a heavier HW load on one day, because they owe me an assignment the other two classes have done.

The lab this week will be another experiment graded in class. You will need to put in a TOC entry to keep the grade in your comp book, but that will be the extent of the "report." Two of you have not finished identifying your unknowns from last week; this will need to be done on Wednesday afternoon. Monday afternoon, there is a Senior Exhibition; Tuesday, I have a meeting; Thursday, I have another meeting. Plan accordingly. If you do not finish your unknown identification on Wednesday, I will see you after the Christmas party on Friday. You can complete your work then.

Your next exam will not be until the second week after we return from break - either that Tuesday, or on Friday. I'm hoping for Tuesday, but that will depend on the Literary Festival activities. For the next exam, your review sheet will be turned in and graded. That will be handed out on Monday, the fifth of January, and due back on that Friday, the ninth. First period will not have class that day, but they will be required to turn in that review sheet that day. The review sheet will be worth 25 points, so it is not a small assignment!

See you tomorrow -

CS

AP CHEM: Day 71.5 - HW for Monday

And a grand time was had by all...

I put some problems up on the board after a couple of you left today, so here they are:

Ch. 12: 35, 36, 51, 54, 57
Ch. 7: 31, 32, 33

Also - Read Ch. 7 Sections 1 - 4.

Remember - the Kinetics Quiz will be on Thursday.

CS