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

Learners blow into balloons and collect their breath--carbon dioxide gas (CO2). They then blow the CO2 from the balloon into a solution of acid-base indicator.

In this chemistry activity, learners use spaghetti to explore density and chemical reactions.

In this activity, learners test what happens when they put baking power on different frozen liquids.

Learners discover that their breath contains carbon dioxide, one of the pollutants found in car exhaust.