Chemistry Lab: Heat of Crystallization

When teaching your unit on thermochemistry, this is an outstanding lab to teach the concepts of heat of crystallization, heat of fusion, and calorimetry.

Purpose:  The student will determine the heat of crystallization of a wax sample.

Materials:   25 x 200 test tube, 250 mL Beaker,  Ring stand and ring,  Hot plate,  100 mL Graduated cylinder,  Thermometer,  Styrofoam cup,  Safety goggles,  Wax sample, Balance,  Test tube tongs.