Question

When molecules in a substance vibrate faster and faster, what happens to the temperature of the substance?

A.
It stays the same.
B.
It gets warmer.
C.
It gets colder.
D.
It depends on the change in speed of the vibrations.

Answer 1

A is the right answer

Answer 2

B is the answer.

The temperature increases and the population of the rotational and the vibrational states changes.