06-26-2008, 04:17 AM
We used to make them from Glycerin on a bed of Potassium Permanganate. Kind of violent for a 5 year old though.
http://jchemed.chem.wisc.edu/JCESOFT/CCA.../PAGE1.HTM
Fred Also
http://jchemed.chem.wisc.edu/JCESOFT/CCA.../PAGE1.HTM
Fred Also