water molecules moving apart. cold air penetrating the hot water. heat from the water moving into the cooler air. hot water reacting with the metal pan.
A pan containing hot water is left on the counter and becomes cool mainly due to

Options:
- water molecules moving apart.
- cold air penetrating the hot water.
- heat from the water moving into the cooler air.
- hot water reacting with the metal pan.

heat from the water moving into the cooler air.