Doc Brown's Edexcel GCSE Science-Chemistry Revision Notes

EDEXCEL GCSE Science Unit C1 Chemistry in our world STUDY NOTES

Chemistry Unit C1 Topic 1 The Earth’s sea and atmosphere Revision Notes

• 1.1 Know that the gases produced by volcanic activity formed the Earth’s early atmosphere.
• 1.2 Know that the early atmosphere contained:
  • a) little or no oxygen
  • b) a large amount of carbon dioxide
  • c) water vapour and small amounts of other gases.
• 1.3 Know why there are different sources of information about the development of the atmosphere which makes it difficult to be precise about the evolution of the atmosphere.
• 1.4 Be able to describe how condensation of water vapour formed oceans.
• 1.5 Be able to describe how the amount of carbon dioxide in the atmosphere was reduced by:
  • a) the dissolution (dissolving) of carbon dioxide into the oceans
  • b) the later incorporation of this dissolved carbon dioxide into marine organisms which eventually formed carbonate rocks
• 1.6 Be able to explain how the growth of primitive plants used carbon dioxide and released oxygen by photosynthesis and consequently the amount of oxygen in the atmosphere gradually increased.
• 1.7 Revise the investigation on the proportion of oxygen in the atmosphere - e.g. an experiment to determine the % of oxygen in the atmosphere.
• 1.8 Be able to describe the current composition of the atmosphere and interpret data sources showing this information.
• 1.9 Be able to demonstrate an understanding of how small changes in the atmosphere occur through:
  • a) volcanic activity
  • b) human activity, including the burning of fossil fuels, farming and deforestation

• Revision Notes and Quizzes to help you revise

  • Edexcel GCSE Science Chemistry

  • When revising, these pages provide you with a summary of what you need to know and be able to do.

  • BUT remember, your primary source of revision are your class notes, investigations and Edexcel GCSE science textbooks.

  • Evolution of Atmosphere Notes

• EDEXCEL GCSE Science CHEMISTRY 1 UNIT 1 C1 Chemistry in our world INDEX

  • Chemistry Unit C1 Topic 1 The Earth’s sea and atmosphere

  • Chemistry Unit C1 Topic 2 Materials from the Earth

  • Chemistry Unit C1 Chemistry Topic 3 Acids

  • Chemistry Unit C1 Topic 4 Obtaining and using metals

  • Chemistry Unit C1 Topic 5 Fuels

• ALL Edexcel GCSE Science Units: Edexcel GCSE Science Biology Unit B1 Influences on life

• Edexcel GCSE Science Biology Unit B2 The components of life  *  Edexcel GCSE Science Unit B3 Using biology

• Edexcel GCSE Science Unit C1 Chemistry in our world * Edexcel GCSE Science Unit C2 Discovering Chemistry

• Edexcel GCSE Science Unit C3 Chemistry in action * Edexcel GCSE Science Unit P1 Universal Physics

• Edexcel GCSE Science Unit P2 Physics for your future * Edexcel GCSE Science Unit P3 Applications of Physics

• GCSE Science-Chemistry courses AQA GCSE Science A CHEMISTRY *  EDEXCEL GCSE Science CHEMISTRY

• OCR GCSE 21st Century Science A CHEMISTRY  *  OCR GCSE Gateway Science B CHEMISTRY

• WJEC GCSE Science-CHEMISTRY  *  Northern Ireland CCEA GCSE Science-CHEMISTRY

• ** Doc Brown's Edexcel GCSE Chemistry Revision

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