The First Law of Thermodynamics, also known as the law of energy conservation, states that energy cannot be created or destroyed in an isolated system. It can only change forms or be transferred from one object to another.
The principle that states that the total amount of energy in a closed system remains constant over time.
Internal Energy: The sum of all the kinetic and potential energies within a system.
Heat Transfer: The process by which thermal energy is exchanged between objects due to temperature differences.