What is the difference between endothermic and exothermic changes? Which type of change (exothermic or endothermic) is water freezing? Why? What type of matter is made of really hot and super excited (fast-moving) charged particles?

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise. An endothermic process absorbs heat and cools the surroundings. The frezing of water is an exothermic process because heat is being removed from the system. In gases the particles move rapidly in all directions, frequently colliding with each other and the side of the container. With an increase in temperature, the particles gain kinetic energy and move faster. Hope this helped! :)