Which option shows the flame test colours of lithium ions, calcium ions and copper(II) ions?
Lithium: lilac; calcium: orange-red; copper(II): green
Lithium: red; calcium: orange-red; copper(II): green
Lithium: red; calcium: green; copper(II): orange-red
Lithium: yellow; calcium: red; copper(II): blue
52 exam-style questions on OCR GCSE Chemistry 4.2 Identifying the products of chemical reactions, covering 4.2.1 Tests to identify gases, 4.2.2 Tests for aqueous ions and flame tests, and 4.2.3 Instrumental methods of analysis. Each one has a worked solution and a mark scheme showing where the marks go.