Hon Chemistry 10-21-13 Moles, Molar Mass & Avogadro’s Number

HON CHEMISTRY: So….you think if his work helped us understand something as significant as the number of something in a mole they might name something after him? They did! Go figure! Another name for the number of anything in a mole is Avogadro’s Number. That would be how many?

You caught on super fast today! Remember, it’s all in terms of one mole. The mass of one mole, the molar mass, is the average atomic mass of the element in grams (periodic table). And the number of atoms in one mole is …. well you know that. Speaking of moles, isn’t he cute? Well, beauty being in the eye of the beholder and all. Hmmmm………

Oh yes – we’re having an all chemistry help session on writing and naming chemical formulas tomorrow – Tuesday, tomorrow – 7:15ish A.M., and you’re invited!

HON CHEMISTRY 10-21-13 Intro to Moles from Tammy Skinner on Vimeo.

Image source blog.ibts.eu/wp-content/uploads/2009/02/mole2.jpg

Chemistry 10-21-13 Binary Molecular Formulas

CHEMISTRY: Do you feel like you have letter and numbers swimming in your eyes? This is one of those times that paying attention to details is super, super important! Here’s the lecture from today on writing formulas and names for binary molecular compounds. Part of it’s really similar to what you learned to do last week for ionic compounds, but another part is totally different. Details!!

Make sure you keep everything straight. Do something that will organize all the information for you, so you won’t get confused. Also, don’t forget the lists you have to memorize, especially the one for Friday – polyatomic ions!! And practice, practice, practice!!!

Help Session tomorrow morning, 7:15ish A.M.!

CHEMISTRY 10-21-13 Binary Molecular Formulas from Tammy Skinner on Vimeo.

flickr photo by Roger Smith