The table shows some information about six elements, including two elements labelled X and Y.
| Element | Melting point / °C | Density / g cm−3\mathrm{g\,cm^{-3}}gcm−3 | Colour of its compounds |
|---|---|---|---|
| sodium | 98 | 0.97 | white |
| potassium | 63 | 0.86 | white |
| iron | 1538 | 7.87 | green or orange-brown |
| copper | 1085 | 8.96 | blue or green |
| X | 1907 | 7.19 | green, orange or yellow |
| Y | 181 | 0.53 | white |
Give two properties from the table that show that iron is a transition metal and not a group 1 metal.
Identify which element, X or Y, is a transition metal. Explain your answer using data from the table.
Iron is used as a catalyst in the Haber process. State what is meant by a catalyst.
Iron forms two chlorides with the formulae FeCl2\mathrm{FeCl_{2}}FeCl2 and FeCl3\mathrm{FeCl_{3}}FeCl3. A chloride ion is Cl−\mathrm{Cl^{-}}Cl−. Give the charge on the iron ion in each compound.
A student says 'All metals have high melting points.' Use the table to explain why the student is wrong.
42 exam-style questions on Edexcel GCSE Chemistry 6.1 Transition metals, alloys and corrosion, covering 6.1.1 Properties of transition metals, 6.1.2 Corrosion and its prevention, and 6.1.3 Alloys and the uses of metals. Each one has a worked solution and a mark scheme showing where the marks go.