SBEC Chemistry and Physics » Lewis structures

Chemistry 1-27-09 Molecular Geometry

Ms. Skinner — Wed, 28 Jan 2009 14:13:29 +0000

CHEMISTRY: Molecular geometry – it’s the shape of things to come! Sorry – that was a really bad pun. Here’s the lecture from Tuesday…

Chemistry 1-21-09 Polyatomic Ions

Ms. Skinner — Wed, 21 Jan 2009 23:35:55 +0000

CHEMISTRY: Try to stare straight at the black dots – I bet you can’t! Speaking of dots, are you starting to see spots in front of your eyes? Here’s the lecture from Wednesday on polyatomic ions. Don’t forget, if you have a negative charge, you get to add that many electrons. And make sure you include brackets and the charge of the ion. BYW, the beginning of this lecture has a review of the previous night’s homework, including a review of resonance.

Chemistry 1-20-09 Multiple Covalent Bonds

Ms. Skinner — Wed, 21 Jan 2009 02:23:24 +0000

CHEMISTRY: Hey guys, here’s the full lecture from Tuesday, 2nd period, on double and triple covalent bonds. Be careful about getting too happy with double bonding – count electrons and don’t forget CONS. Resonance is at the end of this lecture. We’ll put one more twist on Lewis structures tomorrow.

Chemistry 1-16-09 Lewis Structures

Ms. Skinner — Fri, 16 Jan 2009 23:33:52 +0000

CHEMISTRY: Hey guys, do you feel like we worked puzzles today? Lewis structures are kind of like that – trying to see where atoms fit together in molecules. Keep practicing, you can do it! Here’s the lecture from Friday on how to draw Lewis structures. Have a great extra long weekend!

Hon Chemistry 1-16-09 Polyatomic Ions

Ms. Skinner — Fri, 16 Jan 2009 23:08:58 +0000

HON CHEMISTRY: Great job working the Lewis structures for polyatomic ions! Here’s the lecture from Friday on how to do that. Don’t forget to go to the electron store first , then do multiple bonds, if you need them. Have a great extra long weekend!