IGCSE
EDEXCEL
Chemistry (UK)
9 Marks
QP-Chemistry-202505-U2F-local · Question 5
Question (excerpt):
*P75508RA01132* Turn over 11 5 (a) Which gas made up the greatest proportion of the Earth’s early atmosphere? (1) A oxygen B nitrogen C carbon dioxide D argon (b) Figure 6 shows the composition…
*P75508RA01132* Turn over 11 5 (a) Which gas made up the greatest proportion of the Earth’s early atmosphere? (1) A oxygen B nitrogen C carbon dioxide D argon (b) Figure 6 shows the composition…
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