Which statement is true?
(1) At a given temperature, the temperature value is a measure of the total kinetic energy of all the molecules.
(2) At a given temperature, all the particles have the same amount of kinetic energy.
(3) At a given temperature, the average kinetic energy of the molecules is constantly changing.
(4) At a given temperature, the temperature value is a measure of the average kinetic energy of all the molecules.