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Chapter 3 vocab
Solids liquids and gases from Prentice Hall Book
19
Science
8th Grade
02/26/2011

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Term
solid
Definition
has a definite volume and a definite shape
Term
crystalline solids
Definition
solids that are made up of crystaks
Term
amorphous solids
Definition
a solid where the particles are not arranged in a regular pattern
Term
liquid
Definition
has a definite volume but no shape of its own
Term
fluid
Definition
a liquid that flows
Term
surface tension
Definition
the result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together
Term
viscosity
Definition
a liquid's resistance to flowing
Term
gas
Definition
a state of matter with no definite volume or shape
Term
melting
Definition
the change from a solid or liquid
Term
melting point
Definition
a temperature at which a substance changes from solid to a liquid
Term
vaporization
Definition
to change from a liquid to a gas
Term
evaporation
Definition
vaporization that takes place only on the surface of a liquid
Term
boiling
Definition
occurs when a liquid changes to a gas
Term
boiling point
Definition
the temperature at which a liquid boils
Term
condensation
Definition
the reverse of vaporization condensation; the change from a gas to a liquid
Term
sublimation
Definition
occurswhen the surface particles of a solid gain enough energy that they form a gas
Term
pressure
Definition
the force exerted on a surface divided by the total area over which the force is exerted
Term
directly proportional
Definition
when a graph of two variables is a straight line passing through the origin
Term
inverely proportional
Definition
a term used to describe the relationship between two variables whose product is constant
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