What you'll learn
How chemistry provides materials and its environmental impact.
Materials
- Extraction of metals (reduction with carbon or electrolysis); alloys; rusting and its prevention.
- Crude oil: fractional distillation and cracking.
Environment
- Pollutants (CO, SO₂, CO₂), acid rain and the greenhouse effect.
- Life cycle assessment and recycling.
Exam tips
- Link a metal's reactivity to its extraction method.
- Learn which pollutants cause which problem.
Common mistakes
- Saying reactive metals are extracted with carbon.
- Blaming CO₂ for acid rain (it's SO₂).