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Chemistry > Carbohydrates And Alcohol U2 > Flashcards

Carbohydrates And Alcohol U2 Flashcards

1
Q

What does carbohydrates contain

A

Carbon
Hydrogen
Oxygen

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2
Q

How do you test for carbohydrates

A

Add iodine to a complex carbohydrate and a colour will be produced if starch is present

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3
Q

What colour does iodine change to in the presence of starch

A

From brown to blue/black

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4
Q

What colour does Benedict’s turn in the presence of sugar

A

From blue to orange

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5
Q

What is the process of making alcohol from sugar called

A

Fermentation

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6
Q

What do enzymes do when in yeast

A

Converts sugar into alcohol

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7
Q

What is the equation for alcohol

A

Glucose ——-> Ethanol + carbon dioxide

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8
Q

What is ethanol sometimes known as

A

Alcohol

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9
Q

What does alcanols mean

A

Alcohols

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10
Q

what is the functional group alcohols

A

Hydroxyl group

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11
Q

how is the hydroxyl group represented

A

OH
the O needs to be next to the c

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12
Q

what is the general formula for alcohols

A

CnH2n + 2O

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13
Q

what is distillation

A

Distillation is the process used to spill a mixture of liquids by their boiling points

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14
Q

what is the functional group for carboxylic acids

A

carboxyl group

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15
Q

what are carboxylic acids used for

A

The preparation of preservatives (medicines and soaps)
Vinegar

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16
Q

what are alcohols used for

A

Fuels
Sanitisers
Drinks

17
Q

what is the general formula of carboxylic acids

A

CnH2n+1 COOH

18
Q

how to tell the boiling point of an alcohol

A

as the size of alcohol increases, their melting/boiling point increases due to the increase in strength of intermolecular forces

19
Q

how to tell the solubility of alcohol

A

the smallest alcohol can dissolve in water, but as a rule the size of alcohol increases, the solubility decreases

20
Q

what products are produced when there is a metal reaction

A

salt + hydrogen
slow reaction

21
Q

what products are produced when there is a carbonate reaction

A

salt + water + carbon dioxide

22
Q

what products are produced when there is an alkali reaction

A

salt + water
neutralisation

23
Q

how does alcohols produce carbon dioxide and water

A

alcohols burn in a plentiful supply of oxygen to produce carbon dioxide and water

24
Q

What type of reaction do carboxylic acids undergo

A

Neutralisation

Chemistry (14 decks)

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