The misunderstandings related to thermodynamics (including chemical equilibrium) and chemical kinetics of first and second year Hungarian students of chemistry, environmental science, biology and pharmacy were investigated. We demonstrated that Hungarian university students have similar misunderstandings in physical chemistry to those reported in published research papers. We also found that there are significant differences between the misunderstandings in physical chemistry of the students who have had very different levels of chemistry studies at the university. However, there is no significant difference between the four student groups in misunderstandings brought from secondary education. Behind the students' misunderstandings found in this survey there are some common reasons, like using everyday analogies in solving scientific problems, assuming macroscopic properties at the particulate level, reducing proportionality to direct proportionality, and mixing the concepts of thermodynamics and reaction kinetics. (Contains 5 tables and 6 figures.)