This PowerPoint presentation with worked examples and student activities covers:

Topic 2.2 of Module 1: Science Fundementals of the OCR Applied Science Spec.

• Oxidation and reduction (redox) reactions
• Addition reactions of alkenes to include full balanced symbol equations
• Substitution reactions of alkanes and haloalkanes to include full balanced
• equations
• Addition polymerisation to include identification of monomers and repeating units
• Condensation polymerisation to include identification of monomers and repeating units
• Definition of a radical
• The role played by UV light in producing chlorine radicals from CFCs in the
• depletion of the ozone layer
• Equations to show how chlorine radicals can destroy many ozone molecules
• Displacement reactions to include full balanced equations for metals and halogens.