NIST - SI Units - Official NIST International System of Units, metric prefixes, and more...
UTeach Outreach Program - Take your science knowledge and help teach elementary school kids.
Sanger Learning Center - located over in Jester, a useful on-campus resource that you should utilize for all your classes for help.
The ChemWiki Project (UC Davis)
HyperPhysics - nice site on atomic theory
Entropy Sites - by Dr. Frank Lambert (Occidental College) Some VERY GOOD sites and revelations about entropy. Click on the LINKS menu item at the site.
Compilation of Chem Resources - by Stephen Lower - Simon Fraser University - Many links to other informative sites including some free eBook sites.