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Misconceptions sequencing the chemical processes in daniell and electrolysis cells amongst first-year science and mathematics education university students

Walanda, K, Napitupulu, M and Mallaburn, A (2017) Misconceptions sequencing the chemical processes in daniell and electrolysis cells amongst first-year science and mathematics education university students. Journal of Science Education, 18 (2). pp. 113-116. ISSN 0124-5481

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Abstract

This study aims to analyse a number of misconceptions amongst first-year students from the Department of Mathematics and Science Education, Academic Year 2013/2014, at the University of Tadulako, Indonesia. The purpose is to explore the students’ understanding of the concepts and the processes involved in electrolysis cells. In addition, the use and purpose of a salt bridge in these cells are also considered. A two-part test instrument was used to obtain the data. The test instrument involved a paper for the students to answer. The paper encompassed a series of stages for the mechanisms and processes that take place in (i) the Daniell cell (Zn-Cu) and (ii) the electrolysis cell for molten NaCl. Both processes were summarised into seven stages. Each stage consisted of three scientific illustrations for the students to choose from, with only one considered to be chemically correct. In addition, the students were asked to give a brief description of the mechanism they thought occurred at each stage and why. The results demonstrated that there was a higher level of misconceptionwithin the students’ understanding of the electrolysis cell of molten NaCl (44%) when compared to their understanding of the Daniell cell (31%). For the Daniell cell, the half-reduction reaction (51%) was the most common misconception amongst the students, whilst for the molten NaCl cell ion migration (65%) appeared to be so.

Item Type: Article
Uncontrolled Keywords: MD Multidisciplinary
Subjects: L Education > L Education (General)
Divisions: School of Education
Publisher: Accefyn
Date Deposited: 28 Mar 2019 09:09
Last Modified: 28 Mar 2019 11:46
URI: http://researchonline.ljmu.ac.uk/id/eprint/10087

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