Chemistry 2-29-12 Atomic Radii & Ionization Energy

CHEMISTRY: Happy Leap Day! Here’s the lecture on the first periodic trends – atomic radii and ionization energy. You made some great connections today! Let’s finish second ionization energy tomorrow. 🙂

Hey, as you are studying for the test (and you are studying, aren’t you?!?), don’t forget the element videos in Vodpod collection below. To review the properties and uses of the elements for the test, it would be a really great idea for you go back and view hydrogen, potassium, mercury, copper, arsenic, phosphorus, and chlorine. And you might just learn something along the way! You can view the videos on these and all of the elements on this cool website, periodicvideos.com. Just click on the elements, it’d be a great review as you start to prepare for the test. Wait – did I say test?!?

Hon Chemistry 2-29-12 Metallic Bonds

HON CHEMISTRY: Wow! Who knew you guys had such “electric” personalities! Here’s the lecture on metallic bonding. Aren’t you glad there are no structures to draw! Make sure you can use the electron sea model to explain the properties of metals. Also be able to compare and contrast all three types of bonds.

We missed all you guys who weren’t here today! Because of the short period today, here is the change in schedule. The activity we were supposed to do today will be tomorrow (good news, you don’t have to write it up ahead of time in your lab book!), and then we’ll be back on schedule.

By the way, for those of you who’ve been absent, the 3-D Molecules Presentation is one that you can do at home, and then email to me. I’ll put it on the server for you if you aren’t here on Monday. You can find a copy of the 3-D Molecules Presentation here or under the project tab up top. There is one change on the compounds – the next to the last compound should be CH3CH2OH (the numbers are subscripts.) Holler if you have any questions!