Pressure/Elasticity

Balloons and Skewer

Density

Helium and CO2 Balloons
Same Size Bricks
Eight Solid Cylinders

Air/Pressure

Air Lift (Lifting Experiment) (Baggie Lift)
Pressure Plates
Galileo Experiment
Expansion Experiment
Marshmallows
Metal Can
Metal Can - Pressure IN

Liquid Nitrogen

Change of State
Glove Shattering
CO2/Balloon & Dry Ice
Copper Bowl

Chemistry

Slime
Elephant Toothpaste
Electrolysis of Water

Electricity

Tesla Coil
The Cranking Machine and the Visual Demonstrator

Laser/Light

The Laser Light