What You Need:
- Vacuum flasks
- Rubber stoppers
- Dry ice
- Water (try warm water)
- Dish soap
- Plastic cups
What You Do?
- Put the dry ice in the flask and set up the vacuum flask with rubber tubing and rubber stopper.
- Mix the soap and water into the plastic cups.
- Add dry ice to the flask, plug with stopper, and use the end of the tubing to dip into the soapy water mixture.
- Observe what happens at the end of the tubing.
The original idea of creating fog filled bubbles came from a demonstration presented by Bob Becker in 1995 called a Leaky Faucet. Fog filled bubbles dropped from a “faucet” made out of PVC pipe. We’ve updated this idea by being able to control the flow of the carbon dioxide gas with the flask and tubing.