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Summary GCSE Chemistry Revision Flash Cards
GCSE Chemistry revision flash cards covering: • Chemical Bonding • Electrolysis •Salt preparation • Organic Chemistry and more!
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, AlcoholsH H H H
Meth- 1 C
Eth - 2 C
H C C C C O H
Prop - 3 C
Butanol But - 4 C
H H H H Pent - 5 C
Hex - 6 C
H H H Hept - 7 C
H C O H H C C O H Oct - 8 C
Non - 9 C
H Methanol H H Ethanol
Dec - 10 C
H H H
Tip: Remember that the
H C C C H H functional group in alcohols is
H H H Propanol -OH, hence Alcohols can be
dehydrated to form alkenes
, Carboxylic Acids
O H H O
|| | | ||
H-C-0-H H-C-C-C-0-H Note: Solutions of Carboxylic
| | acids have acidic properties!
H H
Methanoic Acid Propanoic Acid
H O H H H O
| || | | | ||
H-C-C-0-H H-C-C-C-C-0-H
| | | |
H H H H
Ethanoic Acid Butanoic Acid
Quick tip! Functional group in Carboxylic acids is -COOH
, Core Practical: Temperature rise due to alcohol combustion
Aims:
To investigate the temperature rise produced in a known
mass of water by the combustion of different alcohols
Thermometer Procedure:
1. Use a measuring cylinder to add 100 cm3 of water to the
conical flask
Conical Flask
Retort Stand 2. Position the conical flask above the spirit burner
3. Record the initial temperature of the water in the conical
Water
flask
4. Place some alcohol into the spirit burner and record the
mass
5. Place the spirit burner under the conical flask and ignite it
6. Gently stir the water with the thermometer and continue
until the temperature of the water increases by about 30°C
7. Extinguish the flame of the spirit burner and put the lid on
Spirit Burner 8. Record the final temperature of the water in the conical
flask
Alcohol 9. Record the final mass of the spirit burner, including the
unburned alcohol and lid
10. Repeat the experiment with a different alcohol in the spirit
burner
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