This model explains kinetics of radical polymerization. Radical polymerization can be thought of as the process of agglomeration of small molecules (monomers) into chains (polymer chains) initiated by active particles (radicals). One can explore the conditions needed for making polymers with long chain-lengths. An example of radical polymerization would be industrial polymerization of ethylene into polyethylene (PET).
For detailed instructions on using the program, take a look at the info window from the Radical Polymerization model.
Click on one of the pictures to see a quicktime movie of the model: