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Chap16vocab
Question | Answer |
---|---|
Explanation of 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 of 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 |