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http://dx.doi.org/10.5012/jkcs.2002.46.4.363

Analysis of Voltaic Cell Described in the Science Textbooks of Secondary Schools  

Sin, Dong-Hyeok (Taejon Science High School)
Lee, Sang-Gwon (Department of Chemistry Education, Korea National University of Education)
Choe, Byeong-Sun (Department of Chemistry Education, Korea National University of Education)
Publication Information
Journal of the Korean Chemical Society / v.46, no.4, 2002 , pp. 363-377 More about this Journal
Abstract
The purpose of this study was to improve the problems of the voltaic cell described in the science textbooks of secondary schools. For this purpose, the contents of science textbooks which are related to the voltaic cell were analyzed and the problems which were not explained clearly by theorems were tried to be explained by experiments, and lastly sug-gestions were made toward the improvements regarding the voltaic cell in the science textbooks. The findings are that there are problems on the ways of ensuring whether the voltaic cell operates properly as a chemical battery, on the explanation of why the hydrogen bubbles form at the zinc electrode, on the cell potential, on the unification of the electrode terminology used, and on the mention of the current. Solutions to the problems except the cell potential were suggested. According to the experiment, the theoretical potential was calculated by considering the potentials of redox reactions at the two electrodes of the cell and by taking into account the characteristics of the electrodes such as the work function, ionization energy, stan-dard reduction potential, and electronegativity.The cell potential of the voltaic cell is explained by several factors. In the improved version of the textbook's introduction section to the voltaic cell, it is necessary to describe the voltaic cell his-torically.For the conceptual section, it should be explained in terms of the Daniel cell.
Keywords
Voltaic Cell; Galvanic Cell; Electromotive Force; Science Textbook;
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