Question

the kinetic theory model states that particles of matter are always in motion. the amount of motion depends on the amount of energy. solids have the least amount of energy. liquids have more energy. gases have the most energy. as phase changes occur, the energy levels change. what happens to the energy levels of particles as matter changes from a solid to a liquid? energy levels remain constant. energy levels decrease. energy levels increase.

Explanation:

When matter changes from a solid to a liquid, heat energy is absorbed. This causes the particles to move more freely and the energy levels of the particles increase.

Answer:

Energy levels increase