preparation and separation techniques 

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10 Terms

1
Liquids
________ are heated until the vapour pressure equals that of atmospheric pressure where the compound starts to boil.
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2
Chlorophyll
________ is more soluble in petroleum spirit than water.when it is extracted from pant leaves an acetone /water mixture is used.
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3
Chemists
________ often have to carry out reactions and then separate the products from the initial reactants.
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4
organic substances
Allow ________ with low boiling point to be heated for long periods without loss due to evaporation.
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5
solvent extraction
a way of separating compounds based on their differing solubility in 2 immiscible liquids eg petroleum spirit and water
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6
fractional distillation
used to separate several liquids from a mixture
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7
distillation
the process of purifying a liquid by boiling it and condensing its vapors
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8
reflux
allow organic substances with low boiling point to be heated for long periods without loss due to evaporation
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9
name of the separation techniques
crystallisation
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10
name of the separation techniques
chromatography
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