WebElements: An informative periodic table.
A Visual Interpretation of the Table of Elements: Visual Elements is an arts and science collaborative project supported by the Royal Society of Chemistry which aims to explore and reflect upon the diversity of elements that comprise matter in as unique and innovative manner as possible.
NIST Chemistry WebBook: A website which provides access to data compiled and distributed by NIST under the Standard Reference Data Program. Types of data include: ion energetics (e.g. ionization energy, electron affinity), IR/Mass/UV/Vis spectra, thermochemical data, etc.
Spartan: Informational website published by Wavefunction, Inc. for the molecular modeling package used in CHEM 1811.
Wikipedia: A free encyclopedia which contains a large amount of general and specific chemistry information. WARNING: Not all of the information is correct!
Specific
Chemistry Information
Chemistry Computer Demonstrations: A good site containing animated chemistry demos (ShockWave required).
The Orbitron: An excellent gallery of atomic and molecular orbitals and their wavefunctions.
Spectroscopy Tutorials: A nice reference for spectroscopy techniques (e.g. IR, NMR).
Energy Conversion Factors: A table containing common energy conversions useful for interpreting calculations.
Chemistry
Journals
American Chemical Society Publications: A list of journals published by the American Chemical Society. Articles can be read online or downloaded as PDF files as long as you are connected through the U.Va. computer system.
Chemical & Engineering News: A weekly chemical news periodical published by the American Chemical Society.
Science Direct: A list of journals published by Elsevier. Articles can be read online or downloaded as PDF files as long as you are connected through the U.Va. computer system.
Web of Science: A searchable database of scientific articles. Useful for finding articles on a particular topic.
Fun
Improbable Research: Research that makes people laugh and then think.
Nearing Zero: An archive of largely satisfactory cartoon freeware.