Tests for molecules

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  • Created by: elle1999
  • Created on: 03-03-16 14:37
What would you use Benedict's reagent to test for?
Reducing sugars
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What colour will Benedict's reagent turn if a reducing sugar is present?
From blue to red
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How would you test for non reducing sugars?
Boil test solution with dilute hydrochloric acid then neutralise it with sodium hydrogen carbonate. The carry out the normal Benedict's test process.
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How would you test for starch?
Browny- orange to blue- black.
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How would you test for proteins?
Sodium hydroxide solution then copper sulphate solution. If present it will turn lilac if absent it will blue.
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how would you test for Lipids?
Shake substance with ethanol for 1 minute. If present the substance turns milky.
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Card 2

Front

What colour will Benedict's reagent turn if a reducing sugar is present?

Back

From blue to red

Card 3

Front

How would you test for non reducing sugars?

Back

Preview of the front of card 3

Card 4

Front

How would you test for starch?

Back

Preview of the front of card 4

Card 5

Front

How would you test for proteins?

Back

Preview of the front of card 5
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