Chemistry 12-4-19 Molecular Formulas

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

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 under the Test Info tab!


flickr photo by Sebastian Mary

Hon Chemistry 12-4-19 Applications of Radioactive Isotopes, Pt. 2 & Fission

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!?

So what’s this about you probably having an radioactive isotope in your house?!? Don’t forget to research how smoke detectors, especially those with Americium, work!


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