Question

3.______ is a measure of the total kinetic energy of the particles in a substance. density heat evaporation kelvin temperature

Explanation:

• Density: It is mass per unit volume ($

ho=\frac{m}{V}$), not related to total kinetic energy of particles.

• Heat: It is the transfer of thermal energy due to a temperature difference, not a measure of total kinetic energy of particles in a substance.
• Evaporation: It is a phase - change process (liquid to gas), not a measure of the total kinetic energy of particles.
• Kelvin: It is a unit of temperature, not a measure itself.
• Temperature: In the kinetic - molecular theory, temperature is related to the average kinetic energy of particles. The total kinetic energy of all particles in a substance is related to its thermal energy, and temperature is a measure that reflects the average kinetic energy (and by extension, is related to the total kinetic energy for a given amount of substance).

Answer:

Heat