Balloons are placed on the tops of two Erlenmeyer flasks, one containing boiling water and the other containing hot air. As the flasks cool, the balloon on the flask of water is drawn into the flask.
A small amount of water is placed in one of two Erlenmeyer flasks on a hot plate. After the water has boiled balloons are fitted to the tops of the flasks and the flasks are allowed to cool. After a short time the balloon on the flask containing water is drawn into the flask as the water vapor condenses to form liquid water; the balloon on the other flask remains unchanged.
Credits:
- Design and Demonstration
- David Whisnant Wofford College, Spartanburg SC 29303
- Video
- Jerrold J. Jacobsen University of Wisconsin - Madison, Madison, WI 53706
- Text
- David Whisnant Wofford College, Spartanburg SC 29303
- Jerrold J. Jacobsen University of Wisconsin - Madison, Madison, WI 53706