Question

what does the temperature of a substance directly measure?
the chemical potential energy of its particles
the total kinetic energy of all its particles
the total mass of the substance
the average kinetic energy of its particles

Explanation:

Temperature is a physical property that relates to the motion of a substance's particles. It does not measure total kinetic energy (which depends on the amount of substance), chemical potential energy, or mass. Instead, it is defined as a measure of the average kinetic energy of the particles in the substance.

Answer:

The average kinetic energy of its particles