Alkanes Explained | A Level Chemistry Organic Chemistry Masterclass

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Alkanes Explained | A Level Chemistry Organic Chemistry Masterclass

In this A Level Chemistry explanation video, we explore alkanes in clear, structured detail. Perfect for Year 1 Organic Chemistry, this masterclass covers structure, naming, isomerism, physical properties, fractional distillation, and cracking. Suitable for all exam boards, made with AQA in mind.

⏱️ Timestamps
00:00 Introduction
00:18 What alkanes are
00:48 Saturated hydrocarbons explained
01:41 General formula (CnH₂n+₂)
02:31 Naming alkanes
03:24 Displayed, structural, and skeletal formulae
05:59 Isomerism in alkanes
07:00 Cycloalkanes
09:08 Physical properties of alkanes
12:26 Solubility
12:59 Why alkanes are unreactive
13:03 Uses of alkanes
13:59 Crude oil overview
15:54 Fractional distillation
20:25 Chain length trends
22:30 Cracking
26:40 Thermal cracking
29:28 Catalytic cracking

📘 Video Overview

This masterclass gives you a complete, exam-ready understanding of alkanes. You’ll learn how to name alkanes using IUPAC rules, interpret structural and skeletal formulae, and recognise key trends in boiling points, volatility, and intermolecular forces.
We then break down the industrial processes of fractional distillation and cracking, explaining why different conditions produce different products and how the petrochemical industry relies on these reactions.
Ideal for revision or building a strong foundation in A Level Organic Chemistry.

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Correction:
29:44 It should be 750 Kelvin. I said the right thing but wrote the wrong units
44:34 The green equation isn’t balanced. It should be… CaO +2H2 +SO2 + 0.5O2 —D CaSO4.2H2O