CHEM: Day 110 - Homework

1) Molecular Geometry worksheet - # 1-10

For each molecule, write out the Lewis dot structure, determine the hybrid orbital and geometry for each central atom, sketch the molecule in the correct shape, and determine whether the molecule is polar.

2) Lab report for Experiment 21 - due tomorrow. All periods.

Heading
Objective
Data (attach sheets)

3) Read Lab 22 for tomorrow.

CS

CHEM: Day 110 - Review notes for Radioactivity

Back when I first taught radioactivity to eighth graders, I put together some of the handouts you've seen and a couple of other notes for students. The "three day" timeline was a bit ambitious, but I've never changed the titles of the pages. This will give you some more written-up information and some extra stuff you might like to read about in preparation for your test on Friday.

Day One - Basic Stability and Nuclear Equation notes

Day Two - Zone of Stability, Predicting Decay, Decay Series and Half-Life

Day Three - Uses of Radioactive Isotopes, plus some notes on making Nuclear Weapons (NOT A MANUAL)

The Zone of Stability handout

Wikipedia notes on isotopes for fun

Average Atomic Mass presentation


Review topic list for the exam


Well, that should keep you busy.

CS

ALL: Link of the Day

Because student meat does not live on chem alone.

And because I have no idea why someone would buy this.

Seriously.



Help an old man out. Whuuuuu?

CS

CHEM: Day 101 Homework

Here is your homework for Tuesday:

1) Read pp 860 - 874
2) Atom-Pushing Worksheet I - Do this on the sheet. We will check this tomorrow.

Remember: Coffice Hours tomorrow will be from 6PM - 7PM.

CS

CHEM: Week 22 - Forecasting

Hokay. So.

This week and next week, being only four-day weeks, plus my absence for JETS next Wednesday, is putting a real cramp in my plans. So, I'll be cutting the radioactivity unit short. If I get a day later in the month, maybe we'll have a Bomb Day and talk more about nuclear weapons. Otherwise, the film this week will be all you get.

We'll be starting bonding on Thursday. Between Thursday and next Tuesday, you should have enough under your belt to tackle the lab project next week. Be nice to the sub. Seriously.

More later.

CHEM: Day 96 Homework and Test Reminder

Your homework for tomorrow is as follows:

1) Be sure to finish reading Ch.6 by tomorrow.

2) ?s - p 199-201: 61, 62, 70, 72, 76, 78, 83, 93b, 95

3) An Exercise on the Periodic Table Due Wednesday 020409

Remember, your next exam, over the second half of Chapter 5 and all of Chapter 6, will be on Friday of this week. Youwill get a topic list tomorrow or Wednesday.

CS

ALL: Day 93 is cancelled. Enjoy your time off.

And get your graphs done!

It's not always a bad thing to be wrong. And I'm really glad at the moment that there's no lab this week that we would now have to make up.



CS

CHEM: Day 86 - Homework

Let's get back to this.

Homework for Tuesday, Jan 19, all classes:

1) Read pp 153-160. This reading will take a couple of days to address properly; you will want to refer back to these pages as we talk about the rules for electronic configuration.
2) ?s - p 166-167: 54, 66-68, 70-73
PLUS
Write out the electronic configuration for the following elements:
O, Mg, S, Cl, Ca, Sc

I'll try and put up some links later today.

CS

ALL: Google Docs hack for better attachment viewing

When I send home an attachment for you to see or print, a number of you use the Google Mail in-line document viewer. The page often prints with extra space between the paragraphs because of the Google Doc conversion of the file to HTML.

With a simple tweak of the URL that comes up when you open a file in Google Mail, you can apply a different document viewer that seems to do a better job. You can go to this link at Lifehacker for more details.

CS

It's 2009. Now what?

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