The measure of the energy of motion of particles in a substance is called temperature.

Here's why:

* Temperature is a fundamental property of matter that reflects the average kinetic energy of its constituent particles.

* Kinetic energy is the energy an object possesses due to its motion. The faster the particles move, the higher their kinetic energy, and the higher the temperature of the substance.

* Temperature is measured in units like Celsius (°C), Fahrenheit (°F), or Kelvin (K).

Important Note:

While temperature is a measure of the average kinetic energy of particles, it doesn't tell us about the total energy of a substance. For that, we need to consider the substance's mass and specific heat capacity.