What happens to liquid propane as it transitions into a vapor state?

When liquid propane transitions into a vapor state, it undergoes a process known as vaporization. During this process, the liquid propane absorbs heat from its surroundings, which causes it to expand significantly. This expansion is a key characteristic of propane and similar gases.

Specifically, when propane vaporizes, it can expand to approximately 270 times its original volume. This means that a small amount of liquid propane can create a large volume of gas, which is a crucial property for its use in various applications, such as heating and fueling in the context of LP gas systems.

The other options touch on different concepts that do not occur during the phase transition of propane to vapor. For example, while it is true that vaporization absorbs heat and affects temperature, the primary and most notable change during this phase is the dramatic increase in volume. Thus, choice C highlights the most significant and practical outcome of liquid propane turning into vapor, which is essential knowledge for anyone working with propane systems.