NS- Ethanol

Question 0

Emulsifiers

Answer 0

‘Water-loving’ head and a ‘water-hating’ tail.

These substances allow oil and water to mix so they can becomes emulsions.

Question 1

Beer and wine are

Answer 1

Alcoholic drinks made by fermentation reactions that use yeast to convert sugar into ethanol.

Question 2

Sugar from plant material

Answer 2

Is converted into ethanol and carbon dioxide by fermentation.

Question 3

Enzymes found in single-called fungi (yeast)

Answer 3

Are natural catalysts that can process happen.

Question 4

Fermentation usually works best

Answer 4

At around 37°C.

Question 5

Sugars for be r-making come from

Answer 5

Barely in water. Hops are added to adjust the flavour or beer.

Question 6

Sugars for wine-making come from

Answer 6

Grape juice.

Question 7

Wine contains a higher proportion of ethanol than beer does

Answer 7

Because grape juice contains a higher concentration of sugars than barley in water.

Question 8

Ethanol is a depressant

Answer 8

It slows down signals in the nerves and brain.

Question 9

Small amounts of alcohol

Answer 9

Help people relax.

Question 10

Greater amount of alcohol

Answer 10

Lead to a lack of self-control and a loss of judgement.

Question 11

Ethanol is also

Answer 11

Toxic.

Question 12

Long-term effects of drinking excessive amounts of alcohol include

Answer 12

Damage to the liver and brain.
It may also cause weight gain and is addictive.
Leads to a risk of stroke or heart disease.

Question 13

Social effects of drinking excessive amounts of alcohol

Answer 13

Drunken driving, vandalism, fighting, aggressive and antisocial behaviour, family violence and breakdown.

Question 14

Formula

Answer 14

C2H5OH

Question 15

Equations

Answer 15

Sugar->ethanol + carbon dioxide

C6H12O6 -> (enzymes in yeast- on top of arrow) 2C2H5OH + 2CO2