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Thermodynamics, an essential branch of physics, explores how heat, work, temperature, and energy interact. Mastering the conversion and transfer of power is vital across many disciplines, from engineering to environmental science. This blog post will introduce the foundational concepts of thermodynamics, such as systems, boundaries, surroundings, control volumes, the universe, and the various systems and processes involved. Basic Concepts in Thermodynamics ๐System : A system is any specific portion of matter or space we choose to study in thermodynamics. This could be as small as a single molecule or as large as the entire atmosphere. ๐Boundary: The boundary is the natural or imaginary surface that separates the system from its surroundings. It can be either fixed or movable, depending on the system. ๐Surrounding: Everything outside the system boundary is considered the surroundings. The system interacts with its surroundings by exchanging energy or matter. ๐Control Volume: This s