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| Type |
Poster Presentation |
| Area |
Chemistry Education |
| Room No. |
Exhibition Hall 2+3 |
| Time |
10월 20일 (금요일) 13:00~14:30 |
| Code |
EDU.P-505 |
| Subject |
Reinterpretation about the mental model of acid and base
-Focusing on application of models according to Context- |
| Authors |
Chulyong Park, Hee CHOI, Sung-ki Kim, Seounghey Paik1,*
Korea National University of Education, Korea
1Department of Chemical Education, Korea National University of Education, Korea
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| Abstract |
Students have a lot of difficulties in learning acid-base concept, and as a cause of confusion there is a conflict of explanation of various acid-base models. The model has a different context for each model, and the definition of the same term varies accordingly. For example, in the Arrhenius acid-base model, water can not be an acid because definition of Arrhenius acid is a substance that releases hydrogen ions in an aqueous solution. However, in the Bronsted-Lowry acid-base model, water acts as an acid against ammonia because definition of Bronsted-Lowry acid is a substance that gives hydrogen ion However, because students can not distinguish between these different contexts, they are confused about why neutral water become an acid.
So far, there have been many studies on acid-base learning and alternative concepts, but existing studies have been focused on the acid-base concept. However, this concept is based on the model, and therefore, students must develop the viewpoint of the model in order to understand the acid-base concept.
Therefore, this study explores the learning process of acid-base focusing on context-appropriate model application and suggests the implication to the curriculum. |
| E-mail |
sevendrag@hanmail.net |
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120th General Meeting of the KCS