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

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.

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