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Ch. 3 Vocab
n/a
19
Physics
9th Grade
09/14/2011

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Term
solid
Definition
state of matter in which materials have a definite shape and volume
Term
liquid
Definition
state of matter in which a material has a definite volume, not shape
Term
gas
Definition
neither definite shape nor volume
Term
kinetic energy
Definition
energy an object has due to its' motion
Term
pressure
Definition
result of a force distributed over an area
Term
absolute zero
Definition
a temp. of 0K
Term
charles's law
Definition
volume of a gas is proprtional to its' temp in kelvins if the pressure and the number of particles are constant
Term
boyle's law
Definition
volume of a gas is inversely proportional to its' pressure if the temp. and the number of particles are constant
Term
phase change
Definition
reversible physical change that occurs when a substance changes from one state of matter to another
Term
endothermic
Definition
system absorbs energy from surroundings
Term
heat of fusion
Definition
amnt of energy to melt water
Term
exothermic
Definition
system releases energy to surroundings
Term
vaporization
Definition
substance changes from a liquid to a gas
Term
heat of vaporization
Definition
amnt of energy to vaporize water
Term
evaportation
Definition
process that changes a substance from a liquid to a gas at temp. below substance's boling point
Term
vapor pressure
Definition
caused by collisions of water vapor and walls of a closed container
Term
condensation
Definition
change from a gas/vapor to a liquid
Term
sublimation
Definition
substance changes from a solid to a gas/vapor without changing to a liquid first
Term
deposition
Definition
gas/vapor changes to a solid without changing into a liquid first
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