* Temperature and Kinetic Energy: Temperature is a measure of the average kinetic energy of the particles within a substance. Kinetic energy is the energy of motion.
* Decreased Temperature, Decreased Kinetic Energy: Lowering the temperature means reducing the average kinetic energy of the particles. This reduction in energy translates to slower motion.
* Impact on States of Matter: This slowing of particle motion is why substances change state when temperature changes:
* Gas to Liquid: As a gas cools, the particles lose kinetic energy and slow down. They eventually become close enough together to form a liquid.
* Liquid to Solid: Further cooling causes the particles to slow down even more, eventually locking them into a fixed, crystalline structure, forming a solid.
In summary: As temperature decreases, the particles within a substance move slower. This decrease in motion can lead to changes in the state of matter.
