Soap bubbles, balloons and marshmallows expand when placed in a vacuum. 


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The Molecular Motion Demonstrator (MMD) shows how kinetic energy affects how atoms arrange themselves.


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Read more: How Atoms Act in Solids and Liquids

The Molecular Motion Demonstrator (MMD) shows how the random motion of molecules in a gas causes two separate gases to diffuse.


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Read more: A Simple Demonstration of Diffusion

Description:

Collision of two heavy objects creates enough thermal energy to burn a hole in paper.


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Brownian motion is shown using the Molecular Motion Demonstrator, a plastic chip, and small metal beads.


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Read more: Brownian Motion Demonstration