Topic 10 – Using resources

Using materials (chemistry only)

10.3.1 Corrosion and its prevention Corrosion Destruction of materials by chemical reactions with substances in the environment Eg rusting 4Fe + 3O2+ 6H2O → 4Fe(OH)3 How to prevent corrosion? Surface coating Sacrificial protection Apply a coating – acts as barrier Eg...

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Life cycle assessment and recycling

10.2.1 Life cycle assessment (LCAs) Life cycle assessments (LCAs) are carried out to assess the environmental impact of products in each of these stages: Extracting and processing raw materials Manufacturing and packaging Use and operation during its lifetime Disposal...

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