Answer:
The average amount of motion of atoms and molecules of a substance measured by:
D. Temperature
Step-by-step explanation:
- The molecules of a substance are always in motion.
- The motion is due to the energy present in them.
- The energy present in these molecules is the kinetic energy.
- This kinetic energy is measured by calculating the total heat energy of the substance.
- More the heat energy greater is the molecular motion.
- Since heat can be measured by measuring the temperature.
- Measuring the temperature of a body will give the idea of amount of heat present in the body.
- Thus , on measuring the temperature we can measure the average amount of motion in atoms and molecules of a substance.