the breakdown of glucose to form ethanol and carbon dioxide
1 of 28
What acts as a catalyst for the reaction ?
a catalyst in yeast
2 of 28
what can ethanol made from fermentation of glucose be derived from ?
any fruit or vegetable
3 of 28
what can alcohol do if taken in exess
have damaging effects to the health and mind
4 of 28
Why is there a limit to the ethanol concentration of fermentation products ?
Yeast becomes inactive when ethanol concentration gets too high
5 of 28
What is a method used to increase ethanol concentration ?
distillation
6 of 28
what is an alcohol ?
they can be identified by the hydroxyl functional group-OH and the ol name ending
7 of 28
what is the general formula of the alcohols ?
CnH2n+1 OH
8 of 28
How are alcohols formed ?
from the addition of water to an alkene to form the corresponding alcohol. This is called hydration
9 of 28
What is dehydration ?
The removal of water from an alcohol to form the corresponding alkene
10 of 28
What does the solubility do ?
Methanol , ethanol and propanol are micible with water so so the solubility increases as the size increases
11 of 28
What does the boiling points do ?
Increase as the size of the molecule increases due to the increasing strength of the intermolrcullar forces
12 of 28
What can alcohols be used as ?
solvents
13 of 28
What is an alkanoic acid ?
They can be identified from the carboxyl functional group -COOH and the -oic name ending
14 of 28
What is vinegar used in ?
household cleaning products designed to remove limescale (a build up of insoluble carbonates on plumbing fixtures and as a preservative in the food industry
15 of 28
What is the PH of carboxylic acids and what do they react wit ?
less than 7 and metals , metal oxides , hydroxides and carbonates forming salts
16 of 28
what is carbohydrate ?
A compound containing carbon , hydrogen and oxygen , with the hydrogen and oxygen in the ratio of 2 to 1
17 of 28
what does the production of carbon dioxide and water indicate ?
the presence of carbon and hydrogen
18 of 28
what is photosynthesis ?
the process which plants make glucose from carbon dioxide and water using light energy in the presence of chlorophyll ; oxygen is released in the provess
19 of 28
What is respiration ?
the process by which the body obtains a a supply of energy by breaking down starch to give carbon dioxide and water
20 of 28
Why are repiration and photosynthesis important ?
maintaining the balance of carbon dioxide and oxygen in the air
21 of 28
what can carbohydrated be divided into ?
sugars and starches
22 of 28
what are some examples of sugars ?
glucose , fructose and maltose and sucrose
23 of 28
how is starch formed ?
joining many glucose molecules together
24 of 28
how can starch be distinguised from other carbohydrates
iodine
25 of 28
what is the test for most sugars ?
benedicts
26 of 28
what can glucose do due to its small size ?
can pass through the gut wall into the bloodstream to be used in cells , thought the body , during respiration
27 of 28
how is starch broken down ?
by acid and enzymes
28 of 28
Other cards in this set
Card 2
Front
What acts as a catalyst for the reaction ?
Back
a catalyst in yeast
Card 3
Front
what can ethanol made from fermentation of glucose be derived from ?
Back
Card 4
Front
what can alcohol do if taken in exess
Back
Card 5
Front
Why is there a limit to the ethanol concentration of fermentation products ?
Comments
No comments have yet been made