Useful General Chemistry Websites
Periodic Tables
Chemicool
Periodic table and chemistry reference (MIT)
Web-elements
A very complete periodic table form the University of Sheffield
Databases
ChemFinder Data Base
Data base of molecular properties indexed by molecular formulas
National Institute of Standards
Physical Constants, SI units, Measurement Uncertainty
National Institute of Standards
NIST Chemistry WebBook
NIST Atomic Spectra Database
Critically evaluated data on atomic energy levels
Other Resources
Annotated Chemistry Resources
Umea University's Award winning site
CHEMystery
ThinkQuest 1997 winner - a virtual textbook of chemistry
Yahoo's Index of Chemistry Sites
ChemGuide
Orbital Central: Hydrogen Atomic Orbital Pictures