Physics 11-17-11 Potential Energy & the Work Energy Theorem

PHYSICS: Speaking of balancing acts, this has been one more week, hasn’t it – and it’s only Thursday! Thanks to all of you who gave blood or tried to give blood today! Here’s the lecture from Thursday on potential energy. And here’s something to think about for tomorrow – why is the first hill of a roller coaster always the highest?

flickr photo by James Jordan

Chemistry 11-17-11 Polymers

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 Thursday. Did you get a copy of the Polymer Worksheet? Click here if you need it: Polymer Worksheet. Some items for contemplation: why are certain plastics recyclable and others not…and what about dishwasher and microwave safe? Help Session tomorrow morning at 7:15!

Image source:

Hon Chemistry 11-17-11 Atomic Number & Isotopes

HON CHEMISTRY: So did you realize how incredibly small an atom is? And if so, what about the nucleus? My word, how marvelous is our God!!

So, what did you think about the story of Lise Meitner? Why don’t you look her up and see what else you can find out about it?

And here’s a weird bit of trivia. Did you know there is a baseball team called the Isotopes? No kidding, they’re a minor league team in Albuquerque, New Mexico. This is a pic of their “Isotope Field.” Go figure! Almost all elements have naturally occurring isotopes is some amount. Are you getting the hang of writing hyphen notation and nuclear symbols? We’ll work on calculating average atomic mass on Monday. And lots of other fun stuff!! 🙂

Image source