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Particles in Motion
Question | Answer |
---|---|
random motion | movement in all directions and at different speeds. |
diffusion | the movement of substances from an area of higher concentration to an area of lower concentration. |
kinetic energy | energy due to motion. |
thermodynamics | the study of heat. |
thermal expansion | an increase in a material’s volume when the temperature is increased. |
thermal contraction | a decrease in a material’s volume when the temperature is decreased. |
temperature | the measure of the average kinetic energy of the particles in a material. |
condensation | the process by which a gas changes to a liquid. |
vaporization | the change in state from a liquid to a gas. |
potential energy | stored energy due to the interactions between objects or particles. |
thermal energy | the result of the motion of all the particles, and the distance and attractions between those particles in the system. |