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8th-Intro to Matter

Phases of matter, phase changes, and density.

TermDefinition
Matter Anything that has mass and takes up space
Mass The amount of matter
Volume The amount of space an object takes up
Weight The measure of the force of gravity
Density The amount of mass per volume of a substance
Density Formula(s) D=M/V M=D*V V=M/D
More Dense Substances... Sink
Less Dense Substances... Float
Solids -Definite shape and volume -Densely packed in regular patterns and vibrates in place
Liquids -No definite shape yet a definite volume. -Closely packed but slide past each other as they move
Gases -No definite shape or volume -Loosely packed and bounce around randomly
Plasma A stream of highly charged ions (give off light, extreme temps,excited gas molecules)
Items in Plasma Phase Lightning & stars
Transforms One Phase of Matter into Another (By Addition or Removal) Thermal energy
Melting Solid to a liquid when thermal energy is added
Freezing Liquid to solid when thermal energy is removed
Vaporizing (Evaporation) Liquid to gas when thermal energy is added (Evaporation occurs only at the surface)
Condensing (Condensation) Gas to liquid when thermal energy is removed
Subliming (Sublimation) Solid to gas when thermal energy is added
Deposition Gas to solid when thermal energy is removed
Phase Changes Show on Graphs as... Plateaus with no temperature change
State of Matter at First Slope (on Upward Graphs) Solid
State of Matter at Second Slope (on Upward Graphs) Liquid
State of Matter at Third Slope (on Upward Graphs) Gas
Phase Change Happening at First Plateau Melting or freezing
Phase Change Happening at Second Plateau Vaporization or condensation
Crystalline Solids A solid with particles arranged in a regular pattern
Amorphous Solids A solid with particles not arranged in a regular pattern
The Temperature Where a Solid Becomes a Liquid Melting Point
The Temperature Where a Liquid Becomes a Gas Boiling Point
The Temperature Where a Liquid Becomes a Solid Freezing Point
Viscosity A fluid's resistance to flowing
Created by: Booklyn
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