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Boiling Point

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


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


spreading of particles throughout a given volume until they are uniformly distributed

Heat of Vaporization

the amount of energy required for the liquid at its boiling point to become a gas

Kinetic Theory

explanation of the behavior of molecules in matter states that all matter is made of constantly moving particles that collide without losing energy

Melting Point

temperature at which a solid begins to liquefy


SI unit of pressure


matter consisting of positively and negatively charged particles


amount of force exerted per unit ares; SI unit is the pascal (Pa)

Thermal Expansion

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


a fluid's resistance to flow

Heat of Fusion

amount of energy required to change a substance from the solid phase of liquid phase

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