OCR 21st Century Science - Chemistry C1

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  • Created by: icanteven
  • Created on: 29-03-16 11:47

1. Pollutants are released by natural processes such as ______ and by human activity such as _____

  • volcanoes and burning fuels
  • Burning fuels and volcanoes
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Other questions in this quiz

2. The Earth's atmosphere was probably formed by ...

  • Volcanic Activity
  • The big bang
  • The heat from the sun

3. What % of the Earth's atmosphere is mainly nitrogen and oxygen?

  • 98%
  • 99%
  • 90%

4. Elements are made of

  • atoms
  • molecules
  • electrons
  • cells

5. Coal is a carbon. In a plentiful air supply it burns to form .....

  • carbon dioxide
  • soot
  • Carbon

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