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