4 links
ACS Molecule of the Week
chemistry.org
American Chemical Society resource offering a new molecule every week, along with an image and description. An archive and periodic table is also available.
Common Molecules Collection
reciprocalnet.org
Discover more information about general molecules common in everyday life, including water molecules, minerals, and vitamins.
Explain it with Molecules
orldofmolecules.com
Uses interactive applets of molecules to answer basic science questions like why ice floats, how soap works, and why diamonds are so hard.
Quia - Binary Ionic Compounds
quia.com
Interactive games to name and write formulas for binary ionic compounds.