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Chapter 16 Vocab

Sections 1,2,3

QuestionAnswer
Explanation of the behavior of molecules in matter; states that all matter is made of constantly moving particles that collide without losing energy. Kinetic Theory
Temperature at which a solid begins to liquefy. Melting Point
Amount of energy required to change a substance from the solid phase to the liquid phase. Heat of Fusion
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. Boiling Point
The amount of energy required for the liquid at its boiling point to become a gas. Heat of Vaporization
Spreading of particles throughout a given volume until they are uniformly distributed. Diffusion
Matter consisting of positively and negatively charged particles. Plasma
Increase in the size of a substance when the temperature is increased. Thermal Expansion
Ability of a fluid- a liquid or a gas- to exert an upward force on an object immersed in the fluid. Buoyancy
Amount of force exerted per unit area; SI unit is the pascal. Pressure
A fluid's resistance to flow. Viscosity
SI unit of pressure. Pascal
Explanation of the behavior of molecules in matter; states that all matter is made of constantly moving particles that collide without losing energy. Kinetic Theory
Temperature at which a solid begins to liquefy. Melting Point
Amount of energy required to change a substance from the solid phase to the liquid phase. Heat of Fusion
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. Boiling Point
The amount of energy required for the liquid at its boiling point to become a gas. Heat of Vaporization
Spreading of particles throughout a given volume until they are uniformly distributed. Diffusion
Matter consisting of positively and negatively charged particles. Plasma
Increase in the size of a substance when the temperature is increased. Thermal Expansion
Ability of a fluid- a liquid or a gas- to exert an upward force on an object immersed in the fluid. Buoyancy
Amount of force exerted per unit area; SI unit is the pascal. Pressure
A fluid's resistance to flow. Viscosity
SI unit of pressure. Pascal
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