What this tests
Syllabus point 2.1 — Elements, compounds and mixtures, in Atoms, elements and compounds. Difficulty easy (estimated from the question's demands, not a Cambridge rating).
Cambridge IGCSE Chemistry 0620 · 2.1 Elements, compounds and mixtures
June 2026 · Paper 23 · Question 4
One real Cambridge question from Atoms, elements and compounds, with the official answer.