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http://dx.doi.org/10.5012/jkcs.2017.61.1.34

The Effects of Taking Elective Chemistry II Courses in High School on Understanding Concepts of Electrochemistry in General Chemistry: Focusing on Chemical Cell  

Yang, Hye-Ran (Department of Chemistry Education, Chonnam National University)
Lee, Sang Kwon (Department of Chemistry Education, Chonnam National University)
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Abstract
The purpose of this study was to analyze the conception type change and to investigate the effect of understanding on concepts in electrochemistry after general chemistry lessons. The significant differences in concept understanding of electrochemistry were shown in both groups. Statistically significant gains in both groups were as shown in distinguishing the chemical cell, in identifying the anode and cathode, and in understanding current formation and flow, while, significant achievements in understanding the role of the salt bridge, and the need for a standard half-cell were not found. Taking elective chemistry II in high school had an effect on understanding related concepts of electrochemistry in general chemistry lessons. It was shown that many freshmen had difficulties in understanding exact related concepts in several kinds after general chemistry lessons. In order to solve these problems, it is necessary to teach contents of the basic concepts in electrochemistry exactly and to hold supplementary lessons.
Keywords
Electrochemistry; Chemical cell; Taking elective chemistry II;
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