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

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

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

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 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 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