Editing Acetone and Styrofoam (section)

==Demonstration==
# Add acetone to one of the containers until it is about 10% full (this should be done ahead of time).
# Leave the other container empty.
# Call for a volunteer from the audience.
# Explain that you will be holding a competition to see who can stuff the most amount of Styrofoam into their container in 60 second.
# Guide the audience member to the empty container.
# Start the competition and nonchalantly add Syrofoam to the container. It will dissolve in the acetone and significantly shrink in volume. 
# Eventually the audience will notice that the Styrofoam is disappearing. Then admit to you crimes and explain to the kids how it works.