As you continue to heat it, boiling water in an open pot will: 1) continue to get hotter 2) get cooler 3) will remain at 100

The correct answer is the last third option. As you continue to heat it, boiling water in an open pot will remain at 100 degrees Celsius. Pure water boils at 100 degrees Celsius at 1 atm. It is the temperature when water molecules have the energy enough to overcome intermolecular attractions and break to become a gas.