Ball race: Five different balls heated and placed on paraffin sheet.

4F10.20 • C+40+0

Ball Race: Five different balls heated and placed on paraffin sheet. A set of 5 balls (Lead, Glass, Zinc, Brass, Iron) are heated to 100 deg C in a boiling water bath, then released onto a sheet of paraffin wax. Iron melts through the paraffin first. Then brass. Zinc melts part way in. Lead and glass melt into the paraffin only a short distance. HEAT OF FUSION