Question

the theory states that the molecules of a substance are alway is motion??????​

Answer 1

Explanation:

In chemistry, we often explain the states of matter in terms of the kinetic molecular theory (KMT). The word kinetic refers to motion and the kinetic molecular theory suggests that atoms and molecules are always in motion. The energy associated with this motion is termed kinetic energy.

Answer 2

Answer:

because matter is made up of that particles that are constantly moving