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PHSEPS Chapter 3

PH Science Explorer Physical Science:chapter 3 - Solids Liquids and Gases

QuestionAnswer
Solid A state of matter that has a definite shape and a definate volume.
Crystalline solid A solid thatis made up of crystals in which particles are arranged in a regular repeating pattern.
Amorphous solid A solid made up of particles that are not arranged in a regular pattern.
Liquid A state of matter that has no definate shape but has a definate volume.
Fluid A substance that can easily flow.
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 liquid's resistance to flowing.
Gas A state of matter with no definate shape or volume.
Melting The change from the solid to the liquid state of matter.
Melting Point The temperature at which a substance changes from a liquid to a solid.
Freezing The change from the liquid to the solid state of matter.
Vaporization The change of state from a liquid to a gas.
Evaporation The process wich occurs when vaporization takes place only on the surface of a liquid.
Boiling The process which occurs when vaporization takes place inside a liquid as well as on the surface.
Boiling point The temperature at which a substance changes from a liquid to a gas.
Condensation The change from the gaseous to the liquid state of matter.
Sublimation The change in state from a solid directly to a gas without passing through the liquid state.
Pressure The force exerted on a surface devided by the total area over which the force is exerted.
Boyle's law A principle that describes the relationship between the pressure and volume of a gas at constant temperature.
Charles's law A principal that describes the relationship between the temperature and volume of a gas at constant pressure.
Graph A diagram that shows how two variables are related.
Origin The (0,0) point on a line graph.
Directly proportional A term used to describethe relationship between two variables whose graph is a strait line passing through the point (0,0).
Vary inversely A term used to describe the relationship between two variables whose graph forms a curve that slopes downward.
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