Mohammad Salehi Avval - Bachelor student of Chemistry Education, Farhangian University, Tehran, Iran.
Amirmohammad Bahrami Maddah - Bachelor student of Chemistry Education, Farhangian University, Tehran, Iran.
Pouya Salahi - Bachelor student of Chemistry Education, Farhangian University, Tehran, Iran.
Amirreza Hasani - Bachelor student of Chemistry Education, Farhangian University, Tehran, Iran.

The purpose of the present study is to investigate students' understanding of the concept of heat and temperature. Concepts that are very important in school curriculum. This concept is one of the concepts related to daily life that forms the basis of physics, chemistry and biology, and in most curricula, it is suggested to learn it from the very first basics of the elementary school. The present article showed that the students of different levels of elementary, middle school (guidance) and middle school (high school) all have a misconception in the topics of heat and thermochemistry. Conceptual understanding of heat and temperature and the difference between these two is a problem that is seen by some students, but applying it and relating it to different quantities such as mass and temperature is a problem that is more comprehensive than the previous problem. The educational planners of the country should benefit from the researches of researchers in the field of educational content and identification of misconception. Teachers, by conducting continuous formative evaluations, inquiring about initial ideas and paying attention and correcting them during teaching, are among the factors that can help neutralize misconception in the early stages and fix them.

Misconception, Thermochemistry, Chemistry Education, Physical Chemistry