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!

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