Question

Which is true for a substance that releases energy?

Answer 1

The correct answer is option A, that is, the energy release decreases the molecular motion and the kinetic energy of the substance.

When a substance discharges energy, it signifies that the energy of the molecules is now being transferred into the substance with whom it comes in contact with or into the atmosphere. Thus, at the time of the discharge of energy, the motion of molecules diminishes and as a consequence, the kinetic energy of the molecules will reduce.  

Therefore, it can be concluded that for a substance the energy discharged diminishes the molecular motion and the kinetic energy of the substance.