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Learners observe and conduct experiments demonstrating the different properties of hot and cold materials.

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

In this activity, learners build a "pneumatic trough," a laboratory apparatus used for collecting pure gas samples over water.

In this chemistry meets cooking activity, learners compare the stability of egg white foams with various additives.

Learners observe a flask with a balloon attached over the mouth and inverted inside the flask.

Learners add calcium chloride to a baking soda solution and observe an increase in temperature along with the production of a gas and a white precipitate. These are all signs of a chemical reaction.

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.