Students’ misconceptions on basic concept of redox reaction

This study aim to know students’ misconception on basic concept of redox reaction. The participants of the study consisted of 236 first-year high school students. The study executed by three tier multiple choice diagnostic test consisting of 30 items. Responses were marked and coded into four categories: understanding, misconception, lack of knowledge and error. Deep interviews were carried out with some of students to obtain a more elaborate source of data and to support the three tier multiple choice diagnostic test results. Data were analyzed quantitatively and qualitatively. Based on the result of this study, it shows that students’ misconceptions in all areas of basic concept of redox reaction such as redox concept based on losing and gaining oxygen, increase and decrease in oxidation number and reducing agent and oxidizing agent concept.