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ch 16
Question | Answer |
---|---|
kinetic theory | an explanation of how particles in matter behave |
melting point | temp when solids begins to liquefy |
heat of fusion | the amount of energy required to change a substance |
boiling point | internal and external pressure in a substance is equal |
heat of vaporization | amount of energy required for the liquid at its boiling point to become a gas |
diffusion | the spreading of particles throughout a given volume until they are uniformly distributed |
plasma | matter consisting of positively and negatively charged particles |
thermal expansion | increase in the size fo a substance when teh temp is increased |
buoyancy | ability of a fluid to exert an upward force on an object |
pressure | force exerted per unit area |
viscosity | the resistance to flow by a fluid |
pascal | the unit pressure is measured in |