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Earth’s early atmosphere

Earth’s early atmosphere

The atmosphere is the layer of gases held around Earth by gravity. Earth formed about 4.6 billion years ago, and active volcanoes released gases that built up around the planet.

6.3.1 Formation and evolution of the atmosphere Lesson

  1. GCSE
  2. /Chemistry
  3. /6.3.1 Formation and evolution of the atmosphere

Step-by-step lessons on OCR GCSE Chemistry 6.3.1 Formation and evolution of the atmosphere. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

Lessons