Heat

In the 1840s, scientists understood that heat was not just a substance but a form of energy that could be converted from one form to another. James Prescott Joule and Rudolf Clausius stated that heat can produce mechanical energy, and mechanical energy can produce heat. Which leads to the idea that the "heat energy" of a substance is the kinetic energy of its atoms and molecules. Heat is what makes kinetic energy. The more heat that is produced, the higher the kinetic energy level of an object or substance is or has. The kinetic energy theory of matter is a scientific theory that states that matter consists of small particles in rapid random motion. The kinetic energy theory gives the differences between three states of matter; solids, liquids, and gases. The Kinetic Theory of Matter states that matter is composed of many small particles that are in constant motion. It also assumes that particles are small and widely separated. They collide and exchange energy. The theory helps explain the flow or transfer of heat and the relationship between pressure, temperature and volume properties of gases. Heat is energy and describes the movement between objects.