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In this activity, learners take on the role of a carbon atom and record which reservoirs in the carbon cycle they visit.

In this activity, learners use a pneumatic trough (see related activity) to generate and collect pure oxygen.

Heat makes some materials expand, and it makes others shrink.

Learners mix vinegar and baking soda to produce a gas. With the addition of a bit of liquid soap, the gas becomes trapped in measurable bubbles.