文章基本信息

标题：Analyzing of Students’ Misconceptions on Acid-Base Chemistry at Senior High Schools in Medan
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作者：Zainuddin Muchtar Harizal
期刊名称：Journal of Education and Practice
印刷版ISSN：2222-288X
电子版ISSN：2222-288X
出版年度：2012
卷号：3
期号：15
页码：65-74
语种：English
出版社：The International Institute for Science, Technology and Education (IISTE)
摘要：Students’ misconceptions on acid-base chemistry at senior high schools in Medan were investigated in this study. The study involved 179 of XI grade students from six different schools in Medan selected based on their accreditation. Students’ misconceptions on acid base chemistry topic were identified and collected by giving a valid test developed by researcher to the students in form of Acid-Base Chemistry Misconception Test containing 12 open-ended multiple choices. The data collected were processed and categorized based on students’ achievement and students’ understanding. It was revealed that students had fifteen misconceptions and eleven submisconceptions. From five main concepts investigated in acid-base chemistry, percentage of students’ responses categorized as specific misconceptions are acid and base concepts (22.07%), pH and pOH concepts (43.58%), ionization degree and equilibrium constant concepts (8.94%), acid-base indicators concept (6.15%), and acid-base titration concept (9.50%). The study also revealed four main students’ problems in understanding acid-base chemistry namely fragmentation of students’ understanding, problems with symbols and mathematical formula, difficulties in understanding the context in acid-base chemistry, and problems in generalization.
关键词：students’ misconception; acid-base chemistry; students’ achievement; students’ understanding