Change in Internal Energy

This model demonstrates the **First Law of Thermodynamics**, which states that heat is a form of energy and that thermodynamic processes are governed by the principle of conservation of energy. According to this law, heat energy cannot be created or destroyed. It can be transferred from one location to another or converted between different forms of energy. When a gas is heated, energy is added to the gas molecules, resulting in an observable increase in the average kinetic energy of the molecules, as reflected by the rise in the temperature of the gas. A similar effect occurs during the compression of a piston. As the internal energy of the gas increases, the molecules move more rapidly, leading to a higher temperature. In this case, energy is transferred to the gas in the form of work, causing an increase in its total energy.