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9.2.1 The Earth's early atmosphere
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Volcanic origin of the atmosphere

Volcanic origin of the atmosphere

Diagram of the young Earth with volcanoes releasing gases into the early atmosphere, plus early and later iron-containing rocks

The young Earth was extremely volcanically active. Eruptions released gases from inside the Earth, and these gases collected around the planet to form its first atmosphere.

9.2.1 The Earth's early atmosphere Lesson

  1. GCSE
  2. /Chemistry
  3. /9.2.1 The Earth's early atmosphere

Step-by-step lessons on Edexcel GCSE Chemistry 9.2.1 The Earth's early 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