120th General Meeting of the KCS

Type Poster Presentation
Area Chemistry Education
Room No. Exhibition Hall 2+3
Time 10월 20일 (금요일) 13:00~14:30
Code EDU.P-502
Subject Development of a program to change a viewpoint of acid-base reaction from matter to process
Authors Hee CHOI, Seounghey Paik*
Department of Chemical Education, Korea National University of Education, Korea
Abstract Many students have difficulty learning acid-base concepts. The reason for this is that different acid-base models have different viewpoint, and the viewpoint of the model is mixed indiscriminately. The Arrhenius model has a material view in that the distinction between acid and base is absolute, and the Bronsted-Lowry model has a procedural view in that the distinction between acid and base is relative. In the history of science, because the layers of the Bornsted-Lowry model are piled up on the layers of the Arrhenius model, many people try to interpret the Bornsted-Lowry model as a viewpoint of the Arrhenius model. However, when a category is misconstructed, some concepts become more difficult to learn than others, which is why it is difficult to learn the Bronsted -Lowry model. On the other hand, there is a claim that only the Arrhenius model is taught to students because it is difficult to learn the Bronsted-Lowry model. Acids and bases are substances, however it must be understood in viewpoint of process because acids and bases are treated as chemical reactions at higher levels of chemistry, especially chemical equilibrium. Therefore, a new explanatory method of acid-base concept is needed to change a viewpoint form matter to process, the program to form a process-oriented view of acid-base was developed and applied to 60 high school. As a result, the understanding of the strong acid and weak acid, the understanding of the relativity of acid, the understanding of the leveling effect, and in particular, the understanding of why the precondition of aqueous solution is important in Arrhenius model were improved.
E-mail chem1210@naver.com