Mark Waner - Particulate Pictures and Kinetic Molecular Theory Concepts:  Seizing an Opportunity

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      Publication Details (including relevant citation   information):

      Waner, M.J., J. Chem. Educ., 2010, 87 (9), 924–927

      Abstract:

      This work examines commonly used particulate-level pictures meant   to  illustrate gases. These pictures are found throughout   textbooks in the  middle grades through the college level,   as well as in questions  frequently used to assess   conceptual learning in students. This work  uses the   kinetic-molecular theory of gases to demonstrate the    inaccuracies often present in these figures, which offers   the  opportunity to address model limitations to students   and to develop  better pictures. A basis for using these   pictures to discuss models and  ideas for ways these   pictures can be used for inquiry activities based  on   analysis of scales is also discussed.

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