Question

4. How does the kinetic energy of a molecule in a substance change with a decrease in its
temperature?
a. It remains the same. b. It increases.
C.It decreases.
& it becomes twice​

Answer 1

Increasing temperature always creates randomness in molecules of matter...so increasing randomness promotes... velocity of particles....and than we know about that... kinetic energy is directly proportional to square of magnitude of velocity ( not velocity because velocity is a vector quantity).

Answer 2

A. It remains the same