Topic 8

GCSE Chemistry Edexcel Topic 8 Fuels and Earth Science

The complete combustion of hydrocarbon fuels is a reaction where...

• Carbon dioxide and water are produced

• Energy is given out (exothermic)

 Describe the potential effects of increased levels of co2 and ch4 generated by human activity

• The levels of co2 and ch4 generated by human activity have increased over time since humans are burning more fossil fuels, farming more livestock and doing more driving

• Doing these activities increases greenhouse gases in the atmosphere

• This leads to:

  • The enhanced greenhouse effect so hotter temperatures

  • Rising sea levels

  • More forest fires

  • Animal species dying

  • Extreme weather

Describe the composition of today’s atmosphere

• 78% nitrogen

• 21% oxygen

• 1% argon

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