Monthly Archives: November 2013

Hon Chemistry 11-26-13 Applications of Radioacive Isotopes, Pt. 2 and Fission & Fusion

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HON CHEMISTRY: Radioactive isotopes all around! Did you ever dream there were so many applications of radioactivity? This is a pic of a test used to check on blood flow through the heart during a stress test. Fun, huh!?

Great job finishing the chapter! And thanks for being patient with the recordings! Here are the two vodcasts that will wrap up the rest of the notes – the first is on the second part of the discussion on uses of radioactive isotopes, the second is from the discussion on fission and fusion.

How are you doing on studying for the test? It will cover the beginning part of chapter 3 (through average atomic mass), chapter 21, and you will most probably also have a set of chemical formulas to write and name.

For chapter 3, check out the Chapter 3a Stuff to Know & Study Suggestions sheet.

For chapter 21, make sure you practice half-life problems and nuclear equations. Also, make sure you’ve memorize the nuclear symbols for alpha particles, beta particles, positrons, neutrons, and protons. And then there are tons of notes on the conceptual stuff. Properties of radioactivity, people, types of radioactive decay, applications of radioactivity, definitions, definitions, and definitions!

HON CHEMISTRY 11-26-13 Applications of Radioactivity, Pt. 2 from Tammy Skinner on Vimeo.

Image source http://www.cedars-sinai.edu

Fission and fusion…

HON CHEMISTRY 11-26-13 Fission & Fusion from Tammy Skinner on Vimeo.

Chemistry 11-26-13 Intro to Atomic Theory

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CHEMISTRY: So how do you feel about being made from earth, air, water, and fire? Here’s the very short intro we did on how we ended up with the atomic theory. Had you ever heard of Lavosier, Proust, and Dalton? We’ll continue with Dalton when we get back!

Happy Thanksgiving!!

CHEMISTRY 11-26-13 Intro to Atomic Theory from Tammy Skinner on Vimeo.

Hon Chemistry 11-25-13 Applications of Radioactivity

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HON CHEMISTRY: Wow! Did you realize radiation was everywhere? It turns out there are some pretty useful applications of radioactivity! Let’s finish talking about that, as well as fission and fusion tomorrow.

HON CHEMISTRY 11-25-13 Applications of Radioactivity from Tammy Skinner on Vimeo.

Photo by Steve Jabo, NMNH.

Physics 11-25-13 Number 22 and Answers

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PHYSICS – Great work on the problems today! Are you still trying to follow formulas, or are you starting to be able to think through the problems and and begin to make connections?

Be careful – don’t just start grabbing formulas and throwing in numbers. Make sure the formulas make sense – ask yourself every time why it makes sense for you to put that particular number in that particular part of the formula. And work them over and over and over until it comes naturally to you!

Homework tonight is changed a bit: Pg. 179 – 184: 46 – 49, 51 like it says, and then 50 and 52 if answered will count as a bonus homework that will take the place of one other unfortunate homework grade. Answers to all of these are on the vodcast – at the end, I think.

Speaking of making connections – let’s do that tomorrow! If you were to design a roller coaster, what would it look like?!? Don’t forget to print & read the Roller Coaster Lab and bring your design tomorrow to class.
🙂

PHYSICS 11-25-13 #22 and Answers from Tammy Skinner on Vimeo.

flickr photo by -BeNnO-

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Hon Chemistry 11-22-13 Half-Life

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HON CHEMISTRY: So what do you figure is the half-life of a banana? But I digress…. Here’s the lecture from Friday on half-life problems. Keep thinking these problems through – listen to the story they’re trying to tell you, and you’ll do great.

Have fun with the half-life simulation lab! Be sure and post your data in the location you guys decided by the time listed on the syllabus. The lab report is due saved to your Google Drive dropbox folder by Tuesday midnight (PDF). Don’t forget to include pics and your graph!

Hon Chemistry 11-22-13 Half-Life from Tammy Skinner on Vimeo.

flickr photo by Caro Wallis

Physics 11-22-13 Work & Energy Problems

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PHYSICS: So why is the first hill of a roller coaster always the highest? Super short – here’s some of the homework problems from Friday on the work energy theorem and the conservation of energy. Have a great weekend!

PHYSICS 11-22-13 Work & Energy Problems from Tammy Skinner on Vimeo.

flickr photo by thecrypt

Physics 11-21-13 Potential Energy & the Work Energy Theorem/ Conservation of Energy

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PHYSICS: See?! I wasn’t kidding about the balancing rocks movement!
🙂

Here’s the lecture from Monday on work and potential energy and conservation of energy. Glad we didn’t have to call 911. Great start on the problems. So why is the first hill of a roller coaster always the highest?

PHYSICS 11-21-13 Potential Energy & Work/ Conservation of Energy from Tammy Skinner on Vimeo.

flickr photo by James Jordan

Hon Chemistry 11-21-12 Radioactive Decay

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HON CHEMISTRY: Can you guess what it is?/ It’s a picture of uranium ore under UV light. Cool, huh! Here’s the lecture from Thursday on the properties of radioactive nuclides and the types of radioactive decay. It also includes how to write nuclear equations. Don’t forget to memorize the nuclear symbols for alpha particles, beta particles (electrons), positrons, neutrons, and protons. Not nearly as bad as polyatomic ions, huh?!?
🙂

Let’s play with half-life tomorrow! Calculators ready!!

HON CHEMISTRY 11-21-13 Properties of Radioactive Nuclides & Nuclear Equations from Tammy Skinner on Vimeo.

Chemistry 11-21-13 Chapter 7 Test Overview

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CHEMISTRY: It’s been a crazy week, huh? God bless you as you study for the test! Here’s the overview we did today. Also, did you find the Chapter 7 Stuff to Know sheet on Edline? Click here on the name, if you need one. I know it seems like a lot, but you can do it! (Remember that you don’t have to know diatomic molecules.)

First priority – make sure that you have memorized EVERYTHING. Then, go to sciencegeek.net and make sure you can write and name chemical formulas. Practice, practice, practice!!! Then start practicing the different kinds of problems – do at least three of each one of them. And also try those on sciencegeek.net. That’s always some good practice. I’ll be praying for you! You can do it!!

HON CHEMISTRY 11-21-13 Properties of Radioactive Nuclides from Tammy Skinner on Vimeo.

flickr photo by libraryman

Chemistry 11-20-13 Polymers

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CHEMISTRY: We finally finished the chapter! Did you realize molecules could be that large? And so many of them. But don’t you think polymers are cool? Here’s the lecture from Wednesday. Don’t forget the Polymer Worksheet and the work from the textbook. Put the answers on sheets of notebook paper.

Some items for contemplation: why are certain plastics recyclable and others not…and what about dishwasher and microwave safe? Hmmmmm…

CHEMISTRY 11-20-13 Polymers from Tammy Skinner on Vimeo.

Image source: http://www.packtech.ca/pb/images/img32161428fffbe41e07.jpg