UPPER SECONDARY SCHOOL STUDENTS’ CONCEPTIONS OF CHEMICAL EQUILIBRIUM IN AQUEOUS SOLUTIONS: DEVELOPMENT AND VALIDATION OF A TWO-TIER DIAGNOSTIC INSTRUMENT

Student understanding of chemical equilibrium in aqueous solutions (CEAS) plays a vital role in their upper secondary school chemistry learning and everyday life. Diagnosis of students’ alternative conceptions (ACs) of the CEAS will provide teachers with valuable information to make instructional de... View More