What happens to propane when it is heated?

When propane is heated, it expands due to the increase in the kinetic energy of its molecules. As the temperature rises, the molecules move faster and require more space, causing the propane to occupy a larger volume. This behavior is consistent with the principles of thermodynamics and gas laws, which state that gases expand when heated, assuming constant pressure. The expansion of the gas is also why propane is stored in liquid form under pressure, as heating causes it to transition back to gas, increasing the pressure in containers. Understanding this characteristic is fundamental in various applications of propane, such as in heating systems and cooking appliances.