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Learners mix vinegar and baking soda together in a bottle to create a chemical reaction. The reaction produces a gas, carbon dioxide, which inflates a balloon attached to the mouth of the bottle.

In this chemistry demonstration, learners observe a chemical reaction that produces a colorful effect.

This hands-on activity demonstrates how a material can act differently when it's nanometer-sized.

Learners write their initials by applying different clear "magic ink" solutions to separate pieces of paper and then "develop" the inks with other clear solutions.