A thermodynamics system is defined as a definite space or area where the study of energy transfer and conversions is made. The system is separated from its surroundings by a boundary, which may be fixed, movable, or imaginary. Anything outside the system that affects its behavior is part of the surroundings. There are three types of thermodynamic systems - open systems, where mass and energy can transfer between the system and surroundings; closed systems, where only energy can transfer; and isolated systems, where neither mass nor energy can transfer. Examples of open systems include internal combustion engines and boilers, while pressure cookers and thermos flasks are examples of closed and isolated systems respectively. Thermodynamic properties are any measurable characteristics of