Organic ChemistryDeep Dive

The Alcohol Family Structure

Part of Alcohols · GCSE GCSE Chemistry revision

This deep dive covers The Alcohol Family Structure within Alcohols for GCSE Chemistry. Revise Alcohols in Organic Chemistry for GCSE Chemistry with 22 exam-style questions and 15 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 2 of 13 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 2 of 13

Practice

22 questions

Recall

15 flashcards

🔬 The Alcohol Family Structure

General Formula: CₙH₂ₙ₊₁OH

All alcohols contain the -OH functional group
The hydrocarbon chain can be any length
Example: Ethanol = C₂H₅OH = C₂H₆ with one H replaced by OH

The First Four Alcohols (Essential to memorise!):

1. Methanol (CH₃OH) — simplest alcohol; TOXIC — can cause blindness; used as antifreeze and fuel

2. Ethanol (C₂H₅OH) — the alcohol in drinks; biofuel and industrial solvent

3. Propanol (C₃H₇OH) — industrial solvent; used in hand sanitisers

4. Butanol (C₄H₉OH) — potential biofuel alternative; industrial applications

3D ball-and-stick models of methanol (CH₃OH) and ethanol (C₂H₅OH) showing the -OH functional group with red oxygen sphere.

Figure 1: The first four alcohols, all sharing the -OH functional group. Naming uses the same prefixes as alkanes (meth-, eth-, prop-, but-) with the suffix "-anol".

Keep building this topic

Read this section alongside the surrounding pages in Alcohols. That gives you the full topic sequence instead of a single isolated revision point.

One Group That Changes Everything How the -OH Group Determines Properties Production Methods for Ethanol Fermentation vs Hydration Comparison

Practice Questions for Alcohols

What is the functional group present in all alcohols?

A. -COOH (carboxyl group)
B. C=C (carbon-carbon double bond)
C. C=O (carbonyl group)
D. -OH (hydroxyl group)

1 markfoundation

Explain what happens when ethanol reacts with sodium metal. Include a balanced equation in your answer.

3 marksstandard

Quick Recall Flashcards

What is hydration of ethene?

Adding water to ethene to produce ethanol: C₂H₄ + H₂O → C₂H₅OH

What are alcohols?

Organic compounds containing the -OH hydroxyl functional group

22 questions on Alcohols — practise free

Instant marking, adaptive difficulty, and 15 spaced repetition flashcards. Free until your GCSEs.

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One Group That Changes Everything

How the -OH Group Determines Properties