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In this activity, learners will be making the opposite of a bubble, an anti bubble! This low start up activity is fun, informative, and best of all-a little messy!

In this activity, learners explore why they can see colors in bubbles and why they change.

In this activity, learners mix up a bubbly brew and examine density. Learners explore how they can make different materials fall and rise in water using oil, water, and salt.

This hands-on activity lets participant explore chemical reactions as they create a soda explosion with lots of bubbles. The bubbles in soda are made of carbon dioxide gas.

In this simple activity, learners see the production of a gas, which visibly fills up a balloon placed over the neck of a bottle.

Like water drops in falling rain, a CD separates white light into all the colors that make it up.

This is a highly visual demonstration that illustrates both the effects of density and chemical reactions.