Disaccharides & Polysaccharides.

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Glucose + Glucose = ?
Maltose
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Glucose + Fructose = ?
Sucrose
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Glucose + Galactose = ?
Lactose
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What is a condensation reaction?
A molecule of water is removed to join together 2 monosaccharides.
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How is a glycosidic bond formed?
Through a condensation reaction.
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What is hydrolysis?
Adding a molecule of water to a disaccharide to break the glycosidic bond.
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What is the test for starch?
Iodine test (iodine indicator will turn black/blue if starch present)
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What is the test for non reducing sugars?
Benedict's test
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Why is sodium hydrogencarbonate solution added to the mixture in Benedict's test for non reducing sugars?
To neutralise the HCL.
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What is added to the mixture in Benedict's test for non reducing sugars?
HCL.
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What must you do to make sure the solution is alkaline in Benedict's test for non reducing sugars?
Test the pH.
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What colour will the reagent turn if a non reducing sugar is present in Benedict's test for non reducing sugars?
Orange/brown.
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Other cards in this set

Card 2

Front

Glucose + Fructose = ?

Back

Sucrose

Card 3

Front

Glucose + Galactose = ?

Back

Preview of the front of card 3

Card 4

Front

What is a condensation reaction?

Back

Preview of the front of card 4

Card 5

Front

How is a glycosidic bond formed?

Back

Preview of the front of card 5
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