Hon Chemistry 11-29-17 Intro to Radioactivity

HON CHEMISTRY: Welcome to nuclear chemistry! No, really – I think you’ll be surprised how much nuclear chemistry is already a part of your everyday life. And now you know where E=mc2 came from!!

Here’s the lecture for Wednesday on a bit of the “history” of radioactivity. By the way, when you get a chance, read about the life of Marie Cure – fascinating woman of science with an incredible story!

Chemistry 1-5-15 Intro to Radioactivity from Tammy Skinner on Vimeo.

Chemistry 11-29-17 Empirical Formulas

CHEMISTRY: So, would you like to be Greg on CSI? Here’s the lecture for Wednesday. Great start on empirical formulas today!

The hardest part is that it’s not a set formula for you to plug and play, but if you’ll keep in mind that you’re really just looking for subscripts which are just moles, you’ll be able to think it through. Percent to mass, mass to moles, moles to smallest whole number ratio.

Tomorrow we’ll talk about a little step you get to add at the end. 🙂

CHEMISTRY 11-11-15 Empirical Formulas from Tammy Skinner on Vimeo.

Image source www.dnr.mo.gov/env/esp/images/prettytesttubes.jpg