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This lesson focuses on how materials behave differently as their surface area increases.

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 activity, learners mix milk, vinegar, baking soda, and water to create sticky glue. Use this activity to explain how engineers develop and evaluate new materials and products.

In this activity, learners explore acid and bases as they create their own invisible ink out of baking soda and grape juice.

In this chemistry activity, learners perform three chemical reactions in a sealed zip-top bag. Learners will record their observations and classify the changes as chemical or physical.

In this activity on page 6 of the PDF (Chemistry—It’s Elemental), learners explore some of the properties of copper using a few common household ingredients.

In this activity, learners construct and launch rockets using simple materials and their understanding of chemical reactions.

In this Spanish-language chemistry activity, learners use simple materials to explore how fire extinguishers work to put out fires.