👉 In physics, a thermodynamic system is one that can undergo extensive and intensive processes. These systems are characterized by their ability to exchange heat with its surroundings in an energy transfer process, which results in changes in temperature, pressure, volume, and entropy. Thermodynamics is the branch of physics that deals with the fundamental laws governing thermodynamic processes, including heat transfer, work, and energy. Thermodynamics is a powerful tool for understanding how systems behave under various conditions and can be used to predict the