Which has the higher internal energy? A given mass of water at 100 degrees Celsius or the same mass of steam at 100 degrees Celsius?

Question

Quizplus · Accepted Answer

Steam has a higher internal energy because it has undergone a phase change from liquid to gas, thereby increasing the potential energy of its molecules. This energy is stored in the increased distance between molecules and increased potential for movement of the molecules themselves. While both substances have the same temperature, the steam has more internal energy due to its phase change.

Which Has the Higher Internal Energy? a Given Mass of Water