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Oxidation and Reduction (Oxygen)

Oxidation and Reduction (Oxygen)

Historically, chemists classified chemical reactions based on whether substances gained or lost oxygen. Today, we call these joint processes redox reactions because oxidation and reduction always occur together. Oxidation is the gain of oxygen, while reduction is the loss of oxygen from a chemical species.

Types of chemical reactions Lesson

  1. GCSE
  2. /Chemistry
  3. /Types of chemical reactions

Step-by-step lessons covering OCR GCSE Chemistry Types of chemical reactions for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 (Foundation Tier) or Paper 3 and Paper 4 (Higher Tier) format. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

Lessons