Cloud In A Bottle Experiment
- 1 tsp. rubbing alcohol
- 1 (1 liter) clear bottle with screw-on cap
- Air pump
- Unscrew the cap and place on a table. Pierce small hole into the center of the cap by hammering the nail through. Remove and discard nail.
- Add 1 tsp. of rubbing alcohol to the inside of the bottle
- Screw cap back on to bottle
- Insert air pump needle into nail hole on the cap.
- Power up the air pump and fill the bottle with air for approx. 5-10 seconds.
- ***Not all air pumps are built the same. Do not exceed 5-10 seconds to prevent excessive pressure***
- Remove the needle (air will hiss out of the nail hole as the cloud condenses inside of the bottle).
Inside the bottle is a small amount of rubbing alcohol that will act as a condensate for the cloud to form. Do not consume this liquid.
With younger children it may be necessary to complete the entire process by a supervisor. That person can then pass around the cloud in the bottle for the children to examine.