All the molecules of a substance possess the "average kinetic energy" value. True False

False<br /><br />Not all molecules of a substance possess the same kinetic energy. In a given sample, molecules have a range of kinetic energies due to their random motion and collisions with each other. The "average kinetic energy" is a statistical measure that represents the mean kinetic energy of all the molecules in the sample. Some molecules will have higher kinetic energy than the average, while others will have lower kinetic energy.