Video Link:  http://www.youtube.com/watch?v=_6y7VyDjjiU

Heat Capacity of Lead

(This demonstration will cause burns if not done properly)

MATERIALS

-          About 25g of lead shot

-          Large test tube

-          Ring stand

-          Test tube clamp

-          Hot plate

-          500mL beaker

-          300mL distilled water

-          Test tube tongs
 

PRESENTATION

-          At the beginning of class, or at least 10 minutes before the demonstration

Begin boiling the water and lower the test tube containing the lead shot into the water using the ring stand and clamp

-          When you’re ready to begin the demonstration, wet one of your hands with cool tap water

-          Remove the test tube containing the led shot from the water with the tongs

-          Pour the lead shot into your very wet hand

-          Because water has a much higher heat capacity (4.184 J/g^oC) than lead (0.160 J/g^oC), it should only heat the water a few degrees and not burn your hand

-          Please do not perform this demonstration without being shown how to do so without burning yourself

DISCUSSION

-          Heat Capacity

HAZARDS

-          Please do not burn yourself.