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Chemistry Unit 4
Unit 4 From The Review Book
15
Chemistry
10th Grade
01/12/2011

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Term
Gaseous Phase
Definition
State of matter which has no definite volume and no definite shape.
Term
Liquid Phase
Definition
State of matter which has definite volume and no definite shape.
Term
Solid Phase
Definition
State of matter which has definite volume and definite shape.
Term
Boiling
Definition
Change of state of matter from liquid to gas.
Term
Condensation
Definition
Change of state of matter from gas to liquid.
Term
Sublimation
Definition
Change of state of matter from solid to gas.
Term
Deposition
Definition
Change of state of matter from gas to solid.
Term
Melting
Definition
Change of state of matter from solid to liquid.
Term
Freezing
Definition
Change of state of matter from liquid to solid.
Term
Kinetic Molecular Theory
Definition
1. Gas molecules travel in a straight line and continue until they collide with something (like pinball)
2. They continually collide and transfer energy, but energy is conserved in an isolated sample.
3. The volume of the molecules is negligible in comparison to the sample volume.
4. No forces of attraction between the molecules.
Term
Temperature
Definition
Average kinetic energy of molecules.
Term
Heat
Definition
A form of energy that is transferred by a difference in temperature.
Term
Heat of Fusion
Definition
The amount of heat required to convert a unit mass of a solid at its melting point into a liquid without an increase in temperature.
Term
Heat of Vaporization
Definition
The amount of heat required to convert a unit mass of a liquid at its boiling point into a gas without an increase in temperature.
Term
Density Formula
Definition
D = Gram Formula Mass/22.4 L
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