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18 Cards in this Set

  • Front
  • Back
why do gases have neither a definite shape nor volume
they are held together loosely
sublimation
solid changes directly into a gas
deposition
gas changes directly into a solid
what happens
heat is absorbed
what happens to heat in a cooling curve when PE increases and KE remains constant
heat is released
heat of fusion
required to change a solid to a liquid
where do the phase changes occur on a graph
where hte lines are straight and constant
how do you convert celcius to kelvin
celcius + 273
heat of vaporization
the amount of heat needed to convert liquid to vapor
how to find heat of fusion/heat of vaporization
multiply the mass by the heat of fusion/heat of vaporization
what is the numerical heat of fusion
334 J/g
what is the numerical heat of vaporization
2260 J/g
ways to separate mixtures
1. filtration
2. distillation
3. chromatography
immiscible
two liquids that are not soluble in each other
distillation
that picture of the chemists glass with a tube attached to it etc.
used to separate solids dissolved in liquids
how does paper chromatography work
different attractions to the paper
what can distillation be used to separate
two miscible liquids with DIFFERENT BOILING PTS.
which of thefollowing behave most like ideal gases?
helium and hydrogen