Question

What happens to the leftover gas molecules and dust particles from a star’s formation?

Answer 1

its gravitational potential energy was converted into kinetic energy.

Answer 2

It can be reuse in another star

Step-by-step explanation:

Remember that the matter and energy is no even create or destroy, that means, will remain the same. The leftover gas molecules will react in another star to produce a new compound or element, the nergy to do this can be obtained from the same gas or from the new star.