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Demonstrations ›Thermodynamics II

Lecture Demonstrations

Thermodynamics II: Entropy and Free Energy

A toy with four layers and various sized balls and holes is used to illustrate the concept of Enthalpy.


The thermal properties of rubber will be explored in this demonstration. Will a rubber band contract or expand when heated?


A combustion reaction is demonstrated by the burning of magnesium in air, emitting a brilliant light and intense heat.


An endothermic reaction involving the combination of two solids is demonstrated.


Dry ice is placed in a plastic bag and sealed. The dry ice sublimes producing CO2 gas, which expands within the plastic bag, doing work on the surroundings.


MREs and commercial handwarmers are displayed and activated to illustrate exothermic chemical processes and commercial uses.