Chemistry 11-30-17 Molecular Formulas

CHEMISTRY: Hey guys! Awesome job with empirical formulas, and now you’ve conquered writing molecular formulas! Here’s the lecture for Thursday. It’s just like writing empirical formulas but with a twist at the end!

By the way, if you’d like some practice or if you have questions, holler and we can have a help session!

We are getting very close to the end of the chapter! Have you started preparing for the test? It will be over ALL of chapter – plus the small bit from chapter 3. Be sure and checked out the Stuff to Know sheet for all of chapter 7 on Edline!

Chemistry 11-12-15 Molecular Formulas from Tammy Skinner on Vimeo.

flickr photo by Sebastian Mary

Hon Chemistry 11-30-17 Properties of Radioactive Isotopes & 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 for Thursday on the properties of radioactive nuclides and the types of radioactive decay. bEGIN WATCHING THE VODCAST AT 5:23 MINUES.

This lesson includes info on 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?!?
🙂

Great start on half-life problems today! I love the way you were able to figure them out yourselves!! Let’s play with them some more tomorrow! Calculators ready!!

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

Physics 11-30-17 Simple Machines

PHYSICS: Did you remember this stuff on simple machines from your physical science days? I don’t think you’ll have any trouble with efficiency and mechanical advantage problems. Give them a whirl and let me know!

How do you think the efficiencies of machines compare? Could you design a method to test that? You don’t need no stinkin’ lab sheets! Do you?
🙂

Physics 11-20-15 Simple Machines from Tammy Skinner on Vimeo.

flickr photo by André Banyai