Ученически погрешни схващания, свързани с химичното равновесие
High-School Students’ Misconceptions about Chemical Equilibrium

Summary/Abstract: Chemical equilibrium is one of the most important and difficult topics in а high-school chemistry curriculum. The determination of the nature of students’ misconceptions (alternative conceptions) related to this topic, their detection and identification are important for both Science Education theory and its practical application. The purpose of the present research is to identify misconceptions about chemical equilibrium of Bulgarian high-school students who study a subject Chemistry and Environmental protection at an advanced level. A diagnostic test consisting of 21 questions was used as a main tool, in which most of the questions were two-tire. A semi-structured interview with students was also used as a support tool for the research. The final version of the test had been validated by experts. The reliability of the test is 0,8. A total of 400 students (N = 400) aged 17 – 19 took the test, of which 226 girls and 174 boys. In 34% of high-school students were identified 16 misconceptions related to chemical equilibrium, which were grouped in 6 areas: definition and establishment of chemical equilibrium; changes in equilibrium conditions; heterogeneous equilibrium; catalyst function; equilibrium constant expression; confusion of kinetics and chemical thermodynamics

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