51ºÚÁÏ

Last updated

1 September 2025

This bundle covers all of the OCR A level chemistry specification section 4.1 (basic concepts of organic chemistry and hydrocarbons).
The resources included are:

  • Introduction to organic chemistry
  • Naming hydrocarbons
  • Quiz – A Question of naming alkanes
  • Functional groups – names and formulae
  • Isomerism
  • Organic reagents and types of reaction
  • 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
4.1.1 basic concepts of organic chemistry(all)
4.1.2 alkanes (all)
4.1.3 alkenes (all)

Content covered:
Introduction to organic chemistry
• Why carbon is special
• Bonding in organic compounds
• Different types of formulae
• Types of organic compounds
• Functional groups and homologous series

Naming hydrocarbons
• Application of IUPAC rules of nomenclature for systematically naming organic compounds
• Naming alkanes and cycloalkanes
• Naming branched alkanes
• Naming alkenes and branched alkenes

Quiz – A Question of naming alkanes

Functional groups – names and formulae
• Application of IUPAC rules of nomenclature for systematically naming organic compounds
• Practice naming organic compounds including those with functional groups
• Revision of empirical and molecular formula and how to calculate them
• Formulae of compounds with functional groups
Displayed formula
Structural formula
Skeletal formula

Isomerism
• Shapes of alkanes (with model building)
• Definitions of structural isomers, stereoisomers, E/Z isomers and cis-trans isomers
• Classification of isomers with examples
• Structural isomers including chain, position and functional group isomers
• Shapes of alkenes (with model building)
• Restricted rotation around the C=C double bond
• Stereoisomers – E/Z and cis-trans isomers
• Animated illustrations of E/Z isomers
• Criteria for E/Z isomerism and for cis-trans isomerism with examples and learning check
• Cahn-Ingold-Prelog rules for naming E/Z isomers with examples

Organic reagents and types of reaction
• Ways of breaking covalent bonds
Homolytic fission
Heterolytic fission
• Types of organic reagents and their reactions
Nucleophiles
Electrophiles
Radicals
• Introduction to mechanisms
• Curly arrows
• Types of reaction
Addition
Substitution
Elimination
• Classification of reactions

**Introduction to alkanes **

  • Sources and uses of alkanes
  • Definitions of fossil fuels and crude oil
  • Uses of alkanes as fuels
  • Bonding in alkanes
  • Formation and rotation of sigma bonds
  • Shapes of alkanes
  • Intermolecular forces in alkanes in terms of non-polar molecules
  • Melting and boiling points of alkanes in terms of London forces
  • Effect of chain length and branching on London forces

Reactions of alkanes

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

Alkenes

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

Polymers from alkenes

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

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

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