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Chapter 5
Matter
17
Science
7th Grade
10/09/2008

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Term
states of matter
Definition
the physical forms in which a substance can exist
Term
solid
Definition
the state in which matter has a definite shape and volume
Term

liquid

 

Definition
the state in which matter takes the shape of its container and has a definite volume
Term
gas
Definition
the state in which matter changes in both shape and volume
Term
pressure
Definition
the amount of force exerted on a given area
Term
inertia
Definition
the tendency of all objects to resist any change in motion
Term
plasma
Definition
the stae of matter that does not have a definite shape or volume and whose particles have broken
Term
change of state
Definition
the conversion of a substance from one physical form to another
Term
melting
Definition
the change of state from a solid to a liquid
Term
freezing
Definition
the change of state from a liquid to a solid
Term
vaporization
Definition
the change of a state from a liquid to a gas
Term
boiling
Definition
vaporization that occurs throughout a liquid
Term
evaporation
Definition
vaporization that occurs at the surface of a liquid below its boiling point
Term
condensation
Definition
the change of a state from a gas to a liquid
Term
sublimation
Definition
the change of state from a solid directly to a gas
Term

exothermic

Definition

the term used to describe a physical or a chemical change in which energy is released or removed

Term
endothermic
Definition
the term used to describe a physical or a chemical change in which energy is absorbed
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