Iron forms two different sulfates. One is called iron(II) sulfate and the other is called iron(III) sulfate. What does this show about iron?
Iron forms more than one type of sulfate ion
Iron sulfate contains more than one type of metal
Iron forms compounds with more than one water molecule
Iron forms ions with more than one charge
40 exam-style questions on AQA GCSE Chemistry 1.3 Properties of transition metals, covering 1.3.1 Comparison with Group 1 elements and 1.3.2 Typical properties of transition metals. Each one has a worked solution and a mark scheme showing where the marks go.