Developing Four-Tier Diagnostic Instrument for Chemical Equilibrium

Misconceptions can affect students’ understanding. Identifying misconceptions is an important first step in understanding student learning. One of the instruments that can be used to diagnose students’ misconceptions is a four-tier diagnostic instrument. This study aimed to develop a four-tier diagnostic instrument on the topic of chemical equilibrium. The final product consisted of 20 four-tier multiple-choice questions. The resulting test items were found to be valid and reliable, with a reliability score of 0.77. These results indicate that the four-tier diagnostic instrument on chemical equilibrium can be used effectively to diagnose students’ misconceptions.