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Create a cushion of carbon dioxide gas to float some soap bubbles on. Many concepts can be demonstrated through this activity:
- Carbon dioxide gas is more dense than air
- Bubbles are semipermeable, allowing only carbon dioxide to diffuse in, but not the air to escape out
- Sublimation from a solid to a gas
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Pros
- Everybody enjoys learning by using dry ice
- Can be used in a variety of lessons
Cons
- None