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Chapter 3
Not fun
22
Science
8th Grade
10/02/2007

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Term
States of Matter
Definition
the physical forms in which a substance can exist;states include solid, liquid, gas,and plasma
Term
Solid
Definition
the state in whichh 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
Plasma
Definition
the state of matter that does not have a definite shape of volume and whose particles have broken apart plasma and is composed of electrons and posotivetly charged ions
Term
Crystalline
Definition
very orderly ,3D arrangement of atoms or molecules
Term
Amorphous
Definition
are composed of atoms or molecules that are in no order
Term
Pressure
Definition
the amount of force exerted on agiven area, expressed in pascals
Term
Surface tension
Definition
the force acting on th particles at the surface of a liquid that causes theliquid to form sperical drops
Term
Viscosity
Definition
a liquids resistance to flow
Term
Boyles' Law
Definition
States that for a fixed amount of gas @ a constant temperature the volume of a gas increases as its preassuer decreases
Term
Charles' Law
Definition
The law that states that for a fixed amount of gas @ a constant preassure the volume of gas increase and so does the temperature
Term
Change of State
Definition
the conversion of a substance from one physical form to another
Term
Melting
Definition
change of state from solid to liquid
Term
frezzing
Definition
change of state from liquid to solid
Term
Vaporization
Definition
the change of state from liquid to a gas includes boling and evaperation
Term
Boiling
Definition
vaporization that occurs at the surface of a liquid and becomes a gas
Term
evaporation
Definition
vaporzation that occurs at the surface of a liquid below its boiling point
Term
Condensation
Definition
the change of state from gas to liquid
Term
boiling point
Definition
the temperature at which a liquid boils
Term
Melting Point
Definition
temperature at which a substance changes from a solid to a liquid
Term
Freezing Point
Definition
the temperature at which substance change from liquid to a solid
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