CHEMISTRY - seperating mixtures 1.3

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Seperating Mixtures
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1 of 7
Filtration
used to seperate an insoluble solid from a mixture - can be done using filter paper
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Crystallisation
seperates a soluble solid from a solvent i.e. a salt - heat over an evaporating dish until the point of crystallisation, then leave to evaporate at room temperature (can be used even if the salt decomposes and you can't use evaporation)
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Distillation
used to obtain a solvent with soluble solids dissolved in it - heat the solution to evaporate the solvent, which can be collected in a condenser to cool
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Mixture
made up of two or more aubstances, with no chemical bonds between them - they have no fixed composition and can be seperated through physical means
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Fractional Distillation
used to seperate mixtures of miscible liquids - the mixture is heated, and the substance with the lowest BP is collected first (you add a fractioning column because it is difficult to obtain a pure liquid, as vapours are given off first)
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Paper Chromatography
used to seperate substances from mixtures in solution, as some compounds are mroe soluble in the solvent than others
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Other cards in this set

Card 2

Front

used to seperate an insoluble solid from a mixture - can be done using filter paper

Back

Filtration

Card 3

Front

seperates a soluble solid from a solvent i.e. a salt - heat over an evaporating dish until the point of crystallisation, then leave to evaporate at room temperature (can be used even if the salt decomposes and you can't use evaporation)

Back

Preview of the back of card 3

Card 4

Front

used to obtain a solvent with soluble solids dissolved in it - heat the solution to evaporate the solvent, which can be collected in a condenser to cool

Back

Preview of the back of card 4

Card 5

Front

made up of two or more aubstances, with no chemical bonds between them - they have no fixed composition and can be seperated through physical means

Back

Preview of the back of card 5
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