VSEPR is a tool to enhance understanding of the geometric constraints imposed by valence shell electron repulsion. The user chooses the number of valence pairs as well as the number of attached atoms. Planes may be added to emphasize the resultant geometrical shapes.
UnitCell shows the unit cell structures for the common crystallographic types and provides 3D manipulation to aid the user in visualization of the structures.
Titrate simulates the titration of a mono- or diprotic acid by a base. The user specifies acid and base concentrations, volume of acid to be titrated, and the pKa value(s) for the acid.