산, 염기 및 산-염기 반응에 대한 학생들의 오개념 연구

A study of students misconceptions of Acid, Base and Acid-Base reactions

This study is to grasp the pattern of misconception according to the pattern of questionnaire and to supply the substantial information in order that teachers might correct the misconception effectively. As for the questionnaire used in the research, it used by making it as four patterns by editing the questionnaire with prerequisite. And the survey was executed on the object of 138 students in the first year in High school. The result of analyzing is as follows. 1. The rate of correction in the question 1 about the pattern of existence of strong acid in the aqueous solution was relatively high. In particular, the percentage of BGa was highest to 70.7%, and the one of AGa was lowest to 42.4%. 2. The rate of correction in the question 2 about the pattern of existence of strong base in the aqueous solution was also presented to similar to the rate of strong acid. And the percentage of BGa was highest to 76.5%, and the one of AGa was lowest to 42.4%. 3. The rate of correction in the question 3 about the pattern of existence of weak acid in the aqueous solution was highest to 58.8% in BGa and was lowest to 22.2% in BNa. 4. The rate of correction in the question 4 about the pattern of existence of mixed solution after neutralized reaction was highest to 72.2% in BNa and was lowest to 37.0% in ANa. 5. The question 1, 2, 3 was found the higher rate of correction in the figure type questionnaire than the narrative type questionnaire.