Foam Gnomes Materials

A very dramatic and entertaining demonstration of a chemical change. Half ounces of Poly A and Poly B are mixed together in a cup. As the two chemicals react, a large pile of hot foam rises out of the cup and quickly hardens. The kids can see and feel, first hand, indicators of a chemical change: evolution of a gas, release of heat, and a color change.

Demo Pack includes 1 oz Poly A, 1 oz Poly B, 2 cups, 2 craft sticks

Study Group Pack includes 2 1-oz Poly A, 2 1-oz Poly B, 4 cups, 4 craft sticks

Classroom Pack includes 16 oz Poly A, 16 oz Poly B, 32 cups, 32 craft sticks

School Pack includes 64 oz Poly A, 64 oz Poly B, 128 cups, 128 craft sticks

SCIENCE OF WIZARDING:  Growing Charm

Rubeus Hagrid used this spell on his pumpkins. We are going to use it to make a huge cup of polyurethane foam that expands to twenty times its original volume. 

Find the Lesson Plan Here

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