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8/17/2019 Purification and Separation
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3. Here is a list of seven common separation techniques.
(7)
A Evaporation
B Fractional distillation
C Chromatograph
! Crstalli"ation
E #u$limation
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F %sing a separating funnel
& !issolving' filtering' evaporating
From A to &' select a suita$le separating technique hich could $e used to separate the folloing
mitures of chemicals. %se each technique onl once.
i !ifferent colours from a de
ii #alt from sea ater
iii #alt from sandiv Copper sulphate crstals from copper sulphate solution
v *odine and sodium iodide
vi !ense oil from a miture of dense oil and light oil
vii +ater from alcohol