Alcohols
I can describe and explain properties and reactions of alcohols.
- Year 11
- AQA
Alcohols
I can describe and explain properties and reactions of alcohols.
Lesson details
Key learning points
- Alcohols can react, at their functional group -OH, with sodium, oxygen, water, or an oxidising agent.
- Alcohols need less oxygen than equivalent alkanes in order to burn completely.
- Alcohols are good solvents which also mix with water.
- The boiling point of ethanol is much higher than the boiling point of ethane.
- Ethanol can be formed via fermentation of glucose (renewable) or via hydration of ethene (non-renewable).
Keywords
Alcohol - Alcohols are a homologous series of compounds that contain the -OH functional group.
Functional group - The functional group is the atom or group of atoms responsible for the way a compound reacts.
Solvent - A solvent is a liquid into which a solute dissolves.
Fermentation - Fermentation is a process that produces solutions of ethanol from sugar, resulting from the anaerobic respiration of microorganisms.
Hydration - A reaction involving the addition of water is known as hydration.
Common misconception
Incorrectly writing the molecular formula of alcohols.
Help pupils understand the difference between structural formula, e.g C₂H₅OH, and molecular formula, e.g C₂H₆O.
Equipment
Whoosh bottle resources - reaction vessel, rubber stopper, splint attached to metre ruler, and alcohols. Complete your own risk assessment.
Licence
Prior knowledge starter quiz
6 Questions
Q1.Identify which of the following homologous series the molecule in the image shown belongs to.

Q2.What name is given to the atom or group of atoms responsible for the way a compound reacts?
Q3.Alcohols can undergo complete combustion.
Which of the following are the products of complete combustion?
Q4.The image shows a molecule of ethanol.
Which of the following is the molecular formula of ethanol?

Q5.Which of the following alcohols can be produced from butene?
Q6.Which of the following is the name of the molecule shown in the image?

Assessment exit quiz
6 Questions
Q1.Which of the following alcohols is shown in the image?
