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  Home > JCE Print > Journal of Chemical Education > Issues > 1997  > November  >
In the Classroom
Applications and Analogies
The Membrane Analogy for Surface Tension in Liquids
Francisco J. Arnaíz
Universidad de Burgos, Lab. de Química Inorgánica, 09001 Burgos Spain
Cover
November 1997
Vol. 74 No. 11
p. 1358
Abstract
The concept of surface tension is usually introduced by referring to liquids and comparing their surface with a thin film that requires some effort to be perforated. That surfaces have special properties is easily assumed by students since it is obvious that surface particles interact with the surrounding in a different way than those inside. However, students frequently have trouble envisioning the surface of a liquid to be like a thin membrane. To reinforce the membrane analogy for surface tension two simple experiments, easily performed with kitchen products, are suggested.
More Information
*  Citation
 Arnaiz, Francisco J. J. Chem. Educ. 1997 74 1358.
*  Keywords
 Introductory/High School Chemistry, Liquids, Demonstrations, and Surface Science
*  History
 Created:
Last Updated:		 July 26, 1999
June 23, 2005
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