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In this weather activity which requires adult supervision, learners will get a chance to make a cloud right here on Earth!

In this hands-on activity, learners determine the types of chemical reactions achieved when combining different household products.

In this chemistry experiment, learners get to make a very bizarre substance using corn starch and water. Is it a solid? Is it a liquid? Or is it a different kind of substance entirely?

Everybody loves messy science, and Flubber is a favorite of both COSI employees and guests!

In this hands-on experiment, kids use chemistry to explore whether acids or bases are better at restoring a penny’s shine.

In this activity about states of matter, learners get to witness firsthand the awesome power of air pressure. They watch as an ordinary soda can is crushed by invisible forces.