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Interpreting and interacting with earth systems

Dry air is roughly [     ] and [     ].

A

Dry air is roughly 21% nitrogen and 78% oxygen.

B

Dry air is roughly 78% nitrogen and 21% oxygen.

C

Dry air is roughly 78% nitrogen and 21% carbon dioxide.

D

Dry air is roughly 70% nitrogen and 29% oxygen.

Interpreting and interacting with earth systems Flashcards

  1. GCSE
  2. /Chemistry
  3. /Interpreting and interacting with earth systems

Flashcards for OCR GCSE Chemistry Interpreting and interacting with earth systems, covering the key terms, definitions and equations you need to recall for Paper 1 and Paper 2 (Foundation Tier) or Paper 3 and Paper 4 (Higher Tier). 23 cards, matched to the OCR GCSE Chemistry (J248) specification. Recall questions account for roughly 40% of marks at GCSE Chemistry, so these target the marks you can secure before the paper starts.