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Phys. Sci. Chap. 3


Fluid A nonsolid state of matter in which the atoms or molecules are free to move past each other, as in a gas or liquid.
Plasma A state of matter that consists of free-moving ions and electrons.
Energy The capacity to do work.
Thermal Energy The total kinetic energy of a substance's atoms.
Evaporation The change of state from a liquid to a gas.
Sublimation The process in which a solid changes directly into a gas.
Condensation The change of state from a gas to a liquid.
Process The amount of force exerted per unit area of a surface.
Pascal The SI unit of pressure; equal to the force of 1 N exerted over an area of 1 m2 (symbol Pa).
Buoyant Force The upward force that keeps an object immersed in or floating on a fluid.
Viscosity The resistance of a gas or liquid to flow.
Gas Laws The laws that state the mathematical relationships between the volume, temperature, pressure, and quantity of a gas.
Created by: osubuckeye1012