BRAINCAKEAlternative Fuels
Most of the world's energy still comes from fossil fuels. There are strong reasons to replace them:
they are non-renewable: crude oil, coal and natural gas took millions of years to form and will run out;
burning them releases carbon dioxide, a greenhouse gas linked to climate change;
they produce pollutants such as CO, NOx, SO2 and particulates.
Main alternatives
Biofuels are made from plants or other recently living material, for example bioethanol and biodiesel. They are renewable because new crops can be grown each year (see the next lessons).
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More in Alkanes
- Combustion of Alkanes
- Oxides of Sulfur
- Oxides of Nitrogen
- Catalytic Converters
- Biofuels
- Biofuels vs Fossil Fuels
- Bond Breaking
- Free-Radical Substitution of Alkanes
All 14 lessons in Alkanes · All Edexcel AS-level Chemistry topics