States of Matter Kinetic Molecular Theory Four States of Matter Thermal Expansion OLIDS, LIQUIDS, & GAS
States of Matter Kinetic Molecular Theory Four States of Matter Thermal Expansion.
Dec 29, 2015
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States of MatterKinetic Molecular Theory
Four States of Matter
Thermal Expansion
SOLIDS, LIQUIDS, & GASES
Kinetic Molecular Theory (KMT)
Tiny, constantly moving particles make up all matter.
The temperature of matter increases as the kinetic energy (motion) of its atoms
increase.
Four States of Matter
Solids
Low KE - particles vibrate but can’t move around
Definite shape & volume
Four States of Matter
Liquids
higher KE - particles can move around but are still
close togetherindefinite shapedefinite volume
Gases
high KE - particles can separate and move
throughout containerindefinite shape & volume
Four States of Matter
Plasmavery high KE - particles
collide with enough energy to break into charged
particles (+/-)gas-like, indefiniteshape & volumestars, fluorescent
light bulbs, TV tubes
Four States of Matter
Most matter expands when heated & contracts
when cooled.
KE causes Temp . Particles collide with more
force & spread out.
EX: thermostats (bimetallic strip)
Thermal Expansion
Changes of StatePhase changes
Heating curves
PHASE CHANGES
Phase Changes
Meltingsolid to liquid
Freezingliquid to solid
melting point = freezing point
Vaporization (boiling)liquid to gas at the boiling point
Evaporationliquid to gas below the boiling point
Condensationgas to liquid
Phase Changes
Sublimationsolid to gas
EX: dry ice, freeze drying, iodine
Phase Changes
Heating Curves (part I)
Heating Curves (part II)
Heating Curves (part II)
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