Question

If temperature is a measure of kinetic energy of the molecules in a substance, why isn’t the temperature of two liters of boiling water twice as high as it of one liter?

Answer 1

Temperature is not a measure of the total kinetic energy of all the molecules in a substance. Two liters of boiling water have twice as much kinetic energy as one liter. The temperatures are the same because the average kinetic energy of molecules in each is the same.