MAH_Grade_10_Unit_2_separations_pp_(NXPowerLite) Opp

MAH_Grade_10_Unit_2_separations_pp_(NXPowerLite) Opp - 100s...

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1 Grade 10 Unit 2 Separations What are the techniques to separate substances and obtain them in a pure form 100’s of free ppt’s from www.pptpoint.com library
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2
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3 Physical separations. There are several techniques which we use in a chemistry lab to separate mixtures. We will look at several in our Grade 10 course
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4 Let us start with simple filtration The sieve is a crude filtration apparatus but using the coffee filter makes it better.
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5 Filtrate goes through the filter paper. The residue get trapped by the filter paper
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6 The usual set up for filtration
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7 Suction filtration This method is faster once it is set up because a water pump sucks out the air beneath the filter paper
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8 CHROMATOGRAPHY
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9 The dyes stick and unstick to the paper many thousands of times as they move up the paper. The difference in ‘stickyness’ separates the dyes.
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10 PHYSICAL SEPARATIONS Chromatography
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11 At the start the dyes are placed in the solvent in a closed container The chromatogram at the end of the run. The sovent front is marked with a pencil
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This note was uploaded on 11/09/2011 for the course CHEM 210 taught by Professor Wilson during the Fall '10 term at BYU.

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MAH_Grade_10_Unit_2_separations_pp_(NXPowerLite) Opp - 100s...

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