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This highly visual model demonstrates the atomic theory of matter which states that a gas is made up of tiny particles of atoms that are in constant motion, smashing into each other.

$10 - $20 per group Ages 8 - 14 10 to 30 minutes
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In this activity best suited as a demonstration, learners observe that when a piece of iron gets too hot, it loses its ability to be magnetized.

$5 - $10 per group Ages 11 - 18 10 to 30 minutes