Absorption of Carbon Dioxide

  • Carbon dioxide is a water soluble gas (it is the gas used in fizzy drinks) and dissolves readily.
  • When the water vapour in Earth’s early atmosphere condensed large amounts of CO2 dissolved in the oceans.
  • Carbonate substances were precipitated during this process which later formed sediments on the seabed.
  • As marine life began to evolve sea creatures began to appear which used up the carbonates to form shells and skeletons.
  • Green plants and algae began to evolve and absorbed considerable amounts of carbon dioxide during photosynthesis.
  • When these creatures died, their remains locked the atmospheric carbon into the rocks and fossil fuels as they developed.
  • This is how the large amounts of carbon dioxide in the early atmosphere were reduced.

AQA GCSE Chemistry Notes

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Morgan Curtin Chemistry

Author: Morgan

Morgan’s passion for the Periodic Table begun on his 10th birthday when he received his first Chemistry set. After studying the subject at university he went on to become a fully fledged Chemistry teacher, and now works in an international school in Madrid! In his spare time he helps create our fantastic resources to help you ace your exams.