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In this activity, learners observe as soap bubbles float on a cushion of carbon dioxide gas. Learners blow bubbles into an aquarium filled with a slab of dry ice.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners will discover why there are holes in bread.

$10 - $20 per group Ages 8 - 18 30 to 45 minutes
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"Sublimation Bubbles" allows learners to explore how some solid materials, such as dry ice, can phase change directly from their solid to gaseous form.

Over $20 per group Ages 6 - adult 5 to 10 minutes
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This hands-on activity lets participant explore chemical reactions as they create a soda explosion with lots of bubbles. The bubbles in soda are made of carbon dioxide gas.

$1 - $5 per student Ages 6 - 11 5 to 10 minutes
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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.

1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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In this activity on page 4 of the PDF (Get Cooking With Chemistry), learners investigate ingredients that combine to produce gas bubbles.

$10 - $20 per student Ages 8 - 14 45 to 60 minutes
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This is a highly visual demonstration that illustrates both the effects of density and chemical reactions.

$1 - $5 per group Ages 4 - adult 5 to 10 minutes