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Pre-service chemistry teachers' understanding of the potential energy curve

Title
Pre-service chemistry teachers' understanding of the potential energy curve
Authors
Park J.-Y.Kim E.-K.
Ewha Authors
박종윤
SCOPUS Author ID
박종윤scopus
Issue Date
2015
Journal Title
Journal of the Korean Chemical Society
ISSN
1017-2548JCR Link
Citation
vol. 59, no. 6, pp. 508 - 519
Keywords
Conceptual understandingConservation of mechanical energyPotential energyPotential energy curvePre-service chemistry teacher
Publisher
Korean Chemical Society
Indexed
SCOPUS; KCI scopus
Abstract
In this study, the pre-service chemistry teachers' understanding of potential energy curve was investigated. The subjects were 24 junior students and 26 senior students studying chemistry education in a college of education. A concept questionnaire consisted of thought experiments with different initial conditions was developed to survey the pre-service teachers' conceptions of potential energy curve. The survey results showed that the pre-service chemistry teachers had difficulties to accept the negative values for potential energy and total energy. And they knew the mechanical energy conservation but they could not apply it properly to the thought experiment situations given in the questionnaire. Also they had the knowledge about the direction of force exerted between the two balls, but many of them believed that the balls would stop moving at the bottom of potential energy curve well. In addition, it was discovered that few pre-service teachers could relate the thought experiments to the chemical bonding, the liquefaction of gas, and the molecular vibration.
DOI
10.5012/jkcs.2015.59.6.508
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
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