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  Home > JCE Print > Journal of Chemical Education > Issues > 1998  > January  >
In the Classroom
Overhead Projector Demonstrations
Demonstrating Heat Changes on the Overhead Projector with a Projecting Thermometer
Chinhyu Hur, Sally Solomon, and Christy Wetzel
Drexel University, Department of Chemistry, Philadelphia, PA 19104
Cover
January 1998
Vol. 75 No. 1
p. 51
Abstract
Demonstrating of heat changes is done on the overhead projector by illuminating the red fluid in a nonmercury thermometer using a simple and inexpensive apparatus. The setup, which consists of an alcohol thermometer inserted in a 50-mL plastic tissue culture dish, is placed on a transparency slide marked with divisions that match the readings on the thermometer. Demonstrations that provide dramatic heat changes are described, including chemical reactions , dissolving of solutes and simulation of flameless ration heaters and commercial hot and cold packs.

See Correction to this article.
More Information
*  Citation
 Hur, Chinhyu; Solomon, Sally; Wetzel, Christy. J. Chem. Educ. 1998 75 51.
*  Keywords
 Demonstrations, Calorimetry, Solutions/Solvents, Thermodynamics, and Teaching/Learning Aids
*  History
 Created:
Last Updated:		 June 28, 1999
June 23, 2005
Link to Correction added (May 2004).
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