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  Home > JCE Print > Journal of Chemical Education > Issues > 2006  > August  >
In the Classroom
JCE DigiDemos: Tested Demonstrations
A Demonstration of Refractive Index Matching Using Isopropyl Alcohol and MgF2
Frederick C. Sauls
Department of Chemistry and Physics, King's College, Wilkes-Barre, PA 18711

checked by Michael R. Johnson
Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

Cover
August 2006
Vol. 83 No. 8
p. 1170
Abstract
Isopropyl alcohol and MgF2 have nearly identical refractive indices; thus a chip of MgF2 disappears when immersed in isopropanol. Addition of water changes the liquid refractive index and causes the MgF2 to reappear. The demonstration works well in a small beaker on an overhead projector.
More Information
*  Citation
 Sauls, Frederick C. J. Chem. Educ. 2006 83 1170.
*  Keywords
 Demonstrations; Elementary / Middle School Science; First-Year Undergraduate / General; Hands-On Learning / Manipulatives; High School / Introductory Chemistry; Materials Science; Physical Properties; Solids
*  History
 Created:
Last Updated:		 6/21/2006
6/28/2006
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