C2.3 Analysing Substances

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what is paper chromatography used for
separate artificial colours
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why do you use a pencil baseline in the process
pen ink may dissolve in the solvent
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what does the amount of spots on the chromatogram mean
the amount = the minimum amount of colours
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advantages of using machines to identify
very sensitive, very fast, very accurate
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what is gas chromatography used for
separate out a mixture or compounds to identify the substances present
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how are substances separated in a gas chromatography column
the substances travel through the tube at different speeds and so are separated
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what is retention time
time it takes for substance to reach the detector
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what does the different number of peaks on a gas chromatograph show
the number of different compounds in the sample
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what does the position of the peaks on the gas chromatograph show
the retention time
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what does a mass spectrometer allow you to do
work out the relative molecular mass of each substance
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Card 2

Front

why do you use a pencil baseline in the process

Back

pen ink may dissolve in the solvent

Card 3

Front

what does the amount of spots on the chromatogram mean

Back

Preview of the front of card 3

Card 4

Front

advantages of using machines to identify

Back

Preview of the front of card 4

Card 5

Front

what is gas chromatography used for

Back

Preview of the front of card 5
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