Chemistry Unit 4

Gaseous Phase
State of matter which has no definite volume and no definite shape.
Liquid Phase
State of matter which has definite volume and no definite shape.
Solid Phase
State of matter which has definite volume and definite shape.
Boiling
Change of state of matter from liquid to gas.
Condensation
Change of state of matter from gas to liquid.
Sublimation
Change of state of matter from solid to gas.
Deposition
Change of state of matter from gas to solid.
Melting
Change of state of matter from solid to liquid.
Freezing
Change of state of matter from liquid to solid.
Kinetic Molecular Theory
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.
Temperature
Average kinetic energy of molecules.
Heat
A form of energy that is transferred by a difference in temperature.
Heat of Fusion
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.
Heat of Vaporization
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.
Density Formula
D = Gram Formula Mass/22.4 L