yr 9 chemistry revision-separation techniques
Presentation
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Chemistry
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9th - 11th Grade
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Practice Problem
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Medium
Standards-aligned
Arunthathi Sankaran
Used 67+ times
FREE Resource
7 Slides • 9 Questions
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yr 9 chemistry revision - separation techniques
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Filtration
a process used to separate solids from liquids or gases using a filter medium.
it allows the fluid to pass through but not the solid.
separate an insoluble solid from a liquid
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Multiple Choice
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Crystallisation
put the solution in an evaporating basin
warm the solution by placing the evaporating basin over a boiling water bath
stop heating before all the solvent has evaporated
After the remaining solution has cooled down, filter it.
Dry the crystals using a warm oven or in air.
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Multiple Choice
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simple distillation
separating the solvent from a solution.
boiling points of solute and solvent are different
solution is heated, solvent evaporates
the solvent is condensed and cooled
the salt does not evaporate
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Multiple Choice
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Multiple Choice
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Fractional distillation
a method for separating a liquid from a mixture of two or more liquids.
the liquids in the mixture have different boiling points
When the mixture is heated, one liquid evaporates before the other
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Multiple Select
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Multiple Choice
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Chromatography
method for separating dissolved substances from one another.
used to separate inks, food colourings and plant dyes
some of the coloured substances dissolve better than others
they travel further up the paper.
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Retention factor
how much the compound has moved compared to how much the solvent has moved
Rf = distance moved by compound ÷ distance moved by the solvent
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yr 9 chemistry revision - separation techniques
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