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

In this activity, learners build a hot air balloon using just a few sheets of tissue paper and a hair dryer.

In this activity (located on page 2), learners will construct tiny model geysers out of film canisters, warm water, and antacid seltzer tablets.

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

In this activity, learners make different shapes that hold exactly one mole of gas (air).

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.