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Chapter 16 PS vocabt
Term | Definition |
---|---|
Kinetic theory | an explanation of how particles in matter behave |
melting point | a solid begins to liquefy |
heat of fusion | amount of energy required to change a substance from the solid phase to the liquid phase |
boiling point | the temperature at which the pressure of the vapor in the liquid is equal to the external pressure used to detect the paths of charged particles |
heat of vaporization | the amount of energy required for the liquid at its boiling point to become a gas |
diffusion | spreading of particles throughout a given volume until they are uniformly distributed |
plasma | matter consisting of positively and negatively charged |
thermal expansion | increase in the size of a substance when the temperature is increased |
buoyancy | the ability of a fluid a liquid or a gas to exert an upward force on an object immersed in it |
pressure | force exerted per unit area |
viscosity | resistance to flow by a fluid |
pascal | the SI unit of pressure |