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This bundle covers all of the OCR A level chemistry specifications section 4.1.2 (alkanes) and section 4.1.3 (alkenes).
The resources included are:

• introduction to alkanes
• reactions of alkanes
• alkenes
• polymers from alkenes

Each topic includes a fully interactive PowerPoint including starter, group activities, questions and plenary along with a worksheet. Answers to all exercises are provided. Some of the resources include a PowerPoint quiz and all are ideal for classroom or home learning.

This bundle is part of a series covering the OCR AS Chemistry specification and relates to the following sections:
Module 4– Core organic chemistry
Part 1 – Basic concepts and hydrocarbons
4.1.2 alkanes (all) and 4.1.3 alkenes (all)

Content covered:
Introduction to alkanes
ï‚Ÿ Sources and uses of alkanes
ï‚Ÿ Definitions of fossil fuels and crude oil
ï‚Ÿ Uses of alkanes as fuels
ï‚Ÿ Bonding in alkanes
ï‚Ÿ Formation and rotation of sigma bonds
ï‚Ÿ Shapes of alkanes
ï‚Ÿ Intermolecular forces in alkanes in terms of non-polar molecules
ï‚Ÿ Melting and boiling points of alkanes in terms of London forces
ï‚Ÿ Effect of chain length and branching on London forces

Reactions of alkanes
ï‚Ÿ Reactivity of alkanes
 Combustion of alkanes – complete and incomplete
ï‚Ÿ Balancing combustion equations
ï‚Ÿ Radicals and dot-and-cross diagrams
ï‚Ÿ Radical chain reactions
ï‚Ÿ Radical substitution of alkanes by halogens
ï‚Ÿ Mechanism including initiation, propagation and termination
ï‚Ÿ Limitations to the use of radical substitution in synthesis of halogenoalkanes

Alkenes
ï‚Ÿ Structure and reactivity of alkenes
 The nature of the double bond – sigma and pi bonds
ï‚Ÿ Explanation of restricted rotation around C=C
ï‚Ÿ Shape of ethene in terms of electron pair repulsion theory
ï‚Ÿ Addition reactions of alkenes
ï‚Ÿ Reactions of ethene and propene including addition of halogens, steam, hydrogen halides and hydrogen
ï‚Ÿ Test for alkenes with aqueous bromine
ï‚Ÿ Catalytic addition of hydrogen - mechanism
ï‚Ÿ Margarine manufacture
ï‚Ÿ Definition of electrophile
ï‚Ÿ Electrophilic addition mechanism
 Addition of HX to unsymmetrical alkenes - Markownikoff’s rule and explanation

Polymers from alkenes
ï‚Ÿ meaning of the terms addition polymer and monomer
ï‚Ÿ the formation of poly(ethene)
ï‚Ÿ general equation for polymer formation
ï‚Ÿ identifying the monomer from the repeat unit of the monomer
ï‚Ÿ disposal of waste polymers by recycling, cracking and combustion
ï‚Ÿ bioplastics
ï‚Ÿ biodegradable polymers
ï‚Ÿ photodegradable polymers

Links
Next lesson: chemistry of alcohols
/teaching-resource/chemistry-of-alcohols-as-chemistry-12273938