Lewis structures & VSEPR – practice problems and videos

Lewis structures are pretty important on this exam.  It’s a good idea to make sure you always count the number of valence electrons and check for octets!  I found you a nice tutorial, and here’s a Sporcle quiz if double and triple bonds throw you off.  This video might also help:

Dot structures II: Multiple bonds:


Here’s a good set of practice problems on VSEPR and molecular geometry if you find you need more to work than the book gives you.  These cover a few geometries we didn’t touch on in class, involving expanded octets, so beware!

I also found you a video that might help you visualize polarity in molecules.