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Fermentation Aim: To recall the chemistry of fermentation To understand that ethanol can be used as a biofuel.

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Presentation on theme: "Fermentation Aim: To recall the chemistry of fermentation To understand that ethanol can be used as a biofuel."— Presentation transcript:

1 Fermentation Aim: To recall the chemistry of fermentation To understand that ethanol can be used as a biofuel

2 Alcoholic drinks

3 alcohol grapes

4 Made from grain flavoured with juniper berries

5 Cider made from apples

6 Beer made from barley

7 Vodka made from grain (rye or wheat)

8 Whiskey made from barley and malted barley or rye

9 Champagne made from 2 types of black grapes and a white grape.

10 Alcopops - vodka

11 Port made from grapes Sherry from grapes

12 Brandy: made from grape wine served warm

13 Tequila – Mexican - from hearts of the blue agave plants

14 Sake – Japanese rice wine

15 Rum – molasses or sugar cane

16 Absinthe – from herbs including artemisia absinthium

17 Which drink do you think contains the highest concentration of alcohol? Record in your notebook

18 Alcohol content Beer5% Table Wine8 – 14% Sparkling wine 8 – 12% Fortified wine (port, sherry)17 –22% Spirits: vodka, gin, whiskey, brandy37.5 – 40% tequila

19 Every year 1000 young adults aged under 15 are admitted to hospital each year with acute alcohol poisoning. Large amounts of alcohol drunk quickly on just ONE occasion can KILL.

20 Grapes and grains contain carbohydrates Starch or Sugar These ferment to give ethanol and carbon dioxide

21 Fermentation Lime water Yeast + glucose + water at 37 o C Glucose ethanol + carbon dioxide yeast C 6 H 12 O 6 2C 2 H 5 OH + 2CO 2 Copy into your notes

22 Fractional Distillation Ethanol is extracted from an ethanol/water mixture by distillation. The mixture is heated to boiling and the ethanol boils first at 78 o C. Draw the apparatus

23 Biofuels The ethanol produced by fermenting plant material (biomass) may be used as a fuel. http://www.bbc.co.uk/radio4/science/rams/costingtheearth.ram

24 Complete the sentence ‘Today I have learnt: Discuss with the person next to you

25 Homework Research the effect of alcohol on the body including reaction time Display as a poster (For Friday)


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