Foundations of the First Law of Thermodynamics

Understanding how energy moves and changes form is the foundation of physics, chemistry, and modern engineering. Without a solid grasp of these core principles, progressing into advanced scientific fields can feel overwhelming. This course provides a clear, conceptual path to mastering the first law of thermodynamics from the ground up. You will transition from having a vague understanding of heat and work to confidently analyzing energy balances in various physical systems. By reading our structured explanations and working through practical written scenarios, you will build a robust mental model of thermodynamic processes. What you'll learn: - Understand foundational thermodynamic terminology including systems, boundaries, and state functions - Calculate heat transfer, work done, and changes in internal energy for closed systems - Apply the first law of thermodynamics to processes like isobaric, isochoric, isothermal, and adiabatic changes - Analyze energy conservation in open systems under steady-flow conditions - Practice solving real-world energy balance equations through step-by-step written exercises The course begins with vital definitions of thermodynamic properties and boundaries, establishing a strong conceptual base. From there, you will explore the mathematical formulation of the first law, study different gas processes, and apply these principles to open and closed systems. This course is designed specifically for beginners, students starting their engineering or physics journeys, and anyone looking to refresh their science fundamentals with no prior thermodynamics experience required. Start reading today to build a strong foundation in the physics of energy.