Chapt 16 physical science vocab

12 terms by amandagugs 

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Flashcards for chapt 16

kinetic theory

AN EXPLANATION OF HOW PARTICLES IN MATTER BEHAVE

melting point

the temperature at which a solid becomes a liquid

heat of fusion

the amount of energy required to change a substance from the solid phase to the liquid phase at its melting point

boiling point

the temperature at which the pressure of the vapor in the liquid is equal to the external pressure acting on the surface of the liquid

heat of vaporization

the 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

an increase in the size of a substance when the temperature is increased

buoyancy

the ability of a fluid (liquid or gas) to exert an upward force on an object immersed in it

pressure

the amount of force exerted per unit area of a surface P=F/A

viscosity

A liquids resistance to flow

pascal

the SI unit of pressure

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