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  Home > JCE Print > Journal of Chemical Education > Issues > 2008  > January  >
In the Classroom
JCE DigiDemos: Tested Demonstrations
Similarity and Difference in the Behavior of Gases: An Interactive Demonstration
Guy Ashkenazi
Department of Science Teaching, The Hebrew University, Jerusalem 91904, Israel

checked by:

James S. Gordon
Division of Science and Mathematics, Central Methodist University, Fayette, MO 65248

Jason D. Hofstein
Department of Chemistry and Biochemistry, Siena College, Loudonville, NY 12211

Cover
January 2008
Vol. 85 No. 1
p. 72
Abstract
Previous research has documented a gap in students' understanding of gas behavior between the algorithmic–macroscopic level and the conceptual–microscopic level. A coherent understanding of both levels is needed to appreciate the difference in properties of different gases, which is not manifest in the ideal gas law. A demonstration that concurrently exposes both the difference and similarity in the behavior of two different gases was designed for this purpose. Instructions for performing the demonstration in an interactive manner are given. The theory of "knowledge in pieces" is used to analyze students' active participation and justify the proposed delivery method.
More Information
*
Citation
Ashkenazi, Guy. J. Chem. Educ. 2008, 85, 72.
*
Keywords
Demonstrations; First-Year Undergraduate / General; Gases; High School / Introductory Chemistry; Kinetics; Learning Theories; Misconceptions / Discrepant Events; Physical Chemistry
*
History
Created:
Last Updated:
12/4/2007
12/10/2007
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