Topic C6: Global challenges

Topic C6: Global challenges in OCR GCSE Chemistry explores the impact of chemical processes on our planet and how chemistry can help address environmental issues. This topic covers the Earth's atmosphere, climate change, the greenhouse effect, and the importance of sustainable development. It also examines finite resources, recycling, and the role of chemists in creating greener technologies. Understanding these concepts is crucial for appreciating how chemistry intersects with global problems like pollution and resource depletion.

This topic builds on earlier knowledge of chemical reactions, the periodic table, and energy changes. It encourages students to think critically about the balance between human activities and environmental health. By studying global challenges, students learn to evaluate the benefits and drawbacks of chemical processes, such as the Haber process for fertilisers versus its energy demands. This topic is essential for developing informed citizens who can contribute to discussions on sustainability and climate action.

In the wider subject of chemistry, C6 connects to topics like rates of reaction, reversible reactions, and life cycle assessments. It prepares students for further study in environmental chemistry, green chemistry, and industrial processes. Mastery of this topic is vital for exam success, as it often features in extended response questions requiring evaluation and justification.