Topic 7 – Fuels & Earth Science

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8 Terms

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Fractional Distillation

Fractional distillation separates crude oil into fractions by boiling point

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Hydrocarbons

Hydrocarbons contain only hydrogen and carbon; used as fuels; non-renewable

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Air Pollution

Air pollution includes CO; CO2; SO2; NOx; particulate matter

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Cracking & Alkenes

Cracking breaks long hydrocarbons into short alkanes and alkenes; alkenes have C=C double bonds; more reactive

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Gases in the Atmosphere

Current atmosphere: 78% N2; 21% O2; 1% Ar; 0.04% CO2

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Evolution of the Atmosphere

Oxygen produced by photosynthesis of algae and plants; CO2 locked in sedimentary rock

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Greenhouse Gases & Climate Change

Greenhouse gases trap heat; increased concentration causes global warming

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