Gas Volume
Effect of Temperature
Play movie (47 seconds, 2.7 MB)
A plunger is removed from its barrel and the barrel is filled with steam from a flask of boiling water. The water vapor in the barrel is at about 95 degrees Celsius, close to the boiling point of water. The plunger is then reinserted into the barrel and the syringe is placed in an ice bath. The water vapor in the barrel condenses, decreasing the internal pressure, and atmospheric pressure pushes the plunger into the barrel.
(8)
Effect of Condensation to Liquid
Play movie (23 seconds, 1.3 MB)
A small amount of liquid water is placed in a can and boiled. The can fills with water vapor. Quickly inverting the can into ice water causes the vapor to condense, and atmospheric pressure crushes the can.
(8)
Portion with no voice-over
Play movie (14 seconds, 1 MB)
This is a portion of the movie having the same video, but the audio consists of the sound of the experiment only, without the voice-over.
© 1997 Division of Chemical Education, Inc., American Chemical Society. All rights reserved.