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  Home > JCE Print > Journal of Chemical Education > Issues > 2004  > October  >
In the Classroom
JCE DigiDemos: Tested Demonstrations
Use of a Tea Infuser To Submerge Low-Density Dry Ice
Carl P. Fictorie
Chemistry, Physics, and Planetary Science Department, Dordt College, Sioux Center, IA 51250-1697

checked by: Ed Vitz
Department of Chemistry, Kutztown University, Kutztown, PA 19530

Cover
October 2004
Vol. 81 No. 10
p. 1473
Abstract
A tea infuser is used as a container to hold low-density dry ice. When used with the classic demonstration where dry ice is used to acidify a solution in a graduated cylinder, the dry ice is suspended in the middle of the cylinder, allowing the solution in the upper half of the cylinder to change color while the lower half remains unchanged. Phase changes, acid–base chemistry, and diffusion phenomena are all illustrated.
More Information
*  Citation
 Fictorie, Carl P. J. Chem. Educ. 2004 81 1473.
*  Keywords
 Acid–Base Chemistry; Aqueous Solution Chemistry; Demonstrations; Laboratory Equipment / Apparatus; Phase Transitions / Diagrams
*  History
 Created:
Last Updated:		 August 31, 2004
September 8, 2004
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