Liquid propane turns into gas through a process called vaporization or evaporation. This happens when liquid propane is exposed to heat, causing the molecules to gain energy and become more active. As the temperature increases, the pressure inside the container also increases until the liquid propane reaches its boiling point of -44 degrees Celsius (-47 degrees Fahrenheit) at standard atmospheric pressure.
Once the boiling point is reached, the liquid propane begins to rapidly evaporate and transform into propane gas. The gas then rises to the top of the container, where it can be released through a valve or nozzle for use in appliances such as grills, stoves, and heaters.
It's important to note that propane is stored and transported as a liquid because it has a much higher energy density than when it is in its gaseous state. However, when it is being used, it needs to be in its gaseous state, which is why vaporization is an essential part of the process