5 papers, 2019–2022 · Paper 2
The Chemistry IGCSE Paper 2 past papers in the collection that assess extraction and uses of metals.
These papers were matched to extraction and uses of metals automatically, by keyword patterns in their questions and mark schemes. A hand-check of 100 randomly chosen matches, each read against the source question paper and the specification's own statements for the topic, found 99 that genuinely assess the topic and 1 that does not — 99% (95% confidence interval 94.6–99.8%). That is a good way to find practice on a topic, not proof a paper covers it, and a paper missing from this list may still assess it. The topics are the specification’s headings, which are broad: one question on any statement under a heading was enough.
All Paper 2 papers | All Chemistry papers | How examiners mark each command word