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Matter

TermDefinition
Solids closely packed particles cause matter to have a definite shape and definite volume.
Crystalline solids particles form a regular repeating pattern called crystals. Example: salt, sugar, and snow.
Amorphous solids Liquid: particles are free to move so a liquid has a definite volume but no definite shape.
Surface Tension An inward force, or pull among the molecules in a liquid that brings the molecules on the surface closer together.
Gas Gas: particles are able to move and spread out filling all space available, gases have no definite shape or definite volume.
pressure Pressure: gas particles constantly collide with one another and the walls of their container. Pressure is the outward push divided by the area of the walls of the container. Pressure= Force/Area.
temperature Temperature: the higher the temperature the faster particles move.
Melting When a solid changes to a liquid
Melting point the temperature at which a substance melts
Freezing When a liquid changes to a solid
Freezing point the temperature when a substance freezes.
Vaporization: When a liquid changes to a gas
Evaporation: takes place only on the surface of the liquid.
Boiling: When vaporization occurs both below the and at the surface
. Boiling Point: Temperature at which a liquid boils.
Condensation: When a gas changes to a liquid.
Sublimation: When a substance changes straight from a solid to a gas. Example: Dry Ice
Charles’s Law: When the temperature of a gas at a constant pressure is increased the volume is increased, if the temperature is decreased then the volume is decreased.
Directly proportional: as one amount increases, another amount increases at the same rate.
Boyles Law: When the pressure of a gas at a constant temperature is increased the volume is decreases, if the temperature is decreased then the volume is increases.
Inversely proportional: When the value of one variable increases, the other decreases.
Viscosity: A liquid's resistance to flowing EXAMPLE Honey has a high viscosity
Liquid particles are free to move so a liquid has a definite volume but no definite shape.
Created by: user-2006756
 

 



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