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Chapter 3

States of Matter

QuestionAnswer
Solid Has a definite shape and a definite volume.
Crystalline solids Type of solid in which the particles form a regular repeating pattern.
Amorphous solid Type of solid in which the particles are not arranged in a regular pattern.
Liquid Has a definite volume but no shape of its own.
Fluid A substance that flows.
Surface tension The result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together.
Viscosity A liquids resistance to flowing which depends on the size and shape of its particles and the attractions between the particles.
Gas A fluid that can change volume very easily.
Melting The change in state from a solid to a liquid.
Melting point Most pure substances have a characteristic temperature in which melting occurs.
Vaporization The change from a liquid to a gas.
Freezing The change from a liquid to a solid.
Evaporation Vaporization that takes place only on the surface of a liquid.
Boiling Occurs when a liquid changes to a gas below its surface as well as at the surface.
Boiling point The temperature at which a liquid boils.
Condensation The change in state from a gas to a liquid.
Sublimation Occurs when the surface particles of a solid gain enough energy that they form a gas.
Pressure Gas particles constantly collide with one another and with the walls of their container. As a result the gas pushes on the walls of the container.
Directly proportional When the graph of two variables is a straight line passing through the origin.
Inversely proportional When the product of two variables is a contant.
Created by: mconde
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