During the process of freezing, a liquid changes into a solid. What happens to the kinetic energy of the particles in the substance during this phase transition?

The correct answer to the question "During the process of freezing, a liquid changes into a solid. What happens to the kinetic energy of the particles in the substance during this phase transition?" is Option B: The average kinetic energy of particles decreases..

The other options — A) The average kinetic energy of particles increases., C) The average kinetic energy of particles remains constant., D) Kinetic energy transforms completely into potential energy. — are incorrect for this GED Exam Prep question. As explained above: Freezing is an exothermic process where energy is removed from the substance. As energy is removed, the particles slow down, resulting in a decrease in their average kinetic energy.