Gen Chem Support
Virtual Chemistry Laboratory (Simulation)Includes many sample exercises rated for difficulty. Instructors can submit their own assignments, as well.
Spectrophotometry Simulation (Simulation)Maybe even better for nonmajors - a good online spectroscopy lab?
Qualitative Analysis - Group I Cations (Simulation)A good lab for when the instructor is out of town?
Visual Elements Interpretation of the Periodic Table (Reference Material)