Air Pollution
Pollutants, atmospheric chemistry, and evidence-led environmental explanations for exam contexts.
This route helps when you keep missing the same type of question across different topics. Use it to combine lesson notes with linked practice and tools in one place.
Notes and Hubs in This Route
- Acid Rain Chemistry and Control
Explain how sulfur dioxide and nitrogen oxides form acid rain, its effects, and how source controls interrupt the chain.
- Air Composition and Evidence
Interpret evidence for the approximate composition of clean, dry air and distinguish normal components from pollutants.
- Air Pollutants: Sources, Effects and Controls
Link prescribed air pollutants to specific sources, harmful effects and targeted emission controls.
- Alkane Reactions
Explain methane combustion and UV chlorine substitution, balance combustion equations, and use products to identify incomplete combustion.
- Hydrogen as a Fuel and Fuel Cells
Learn why hydrogen is a potential fuel, how a hydrogen fuel cell generates electricity directly, and how production affects its environmental impact.
- Biofuels and Carbon Emissions
Explain sugarcane bioethanol as a renewable fuel, follow carbon through its production and combustion, and evaluate emissions across its life cycle.
- Carbon Cycle
Trace carbon transfers between atmospheric carbon dioxide, living material and fuels.
- Environmental Chemistry
Chemistry environmental hub: air composition and pollutants, acid rain, greenhouse gases, global warming, and ozone depletion. Practise the topic with its check.
- Fossil Fuels: Combustion and Emissions
Explain non-renewable fossil fuels, balance methane combustion, and connect oxygen supply and fuel composition to emissions.
- Greenhouse Effect, Climate and Mitigation
Use atmospheric evidence to explain infrared heat trapping, climate consequences and mitigation choices.
- Ozone Layer and Depletion
Explain how stratospheric ozone protects life, how CFCs deplete it and why ultraviolet exposure increases.
- Sulfur Dioxide and Sulfuric Acid
Sulfur dioxide: its acidified potassium manganate(VII) test, acid-rain effects, flue-gas removal and dilute sulfuric acid links.