A freshly cut piece of sodium goes dull within seconds when it is left in air. A freshly polished piece of nickel stays shiny for years. What does this show?
Nickel reacts with oxygen faster than sodium does
Sodium and nickel react with oxygen at the same rate
Neither sodium nor nickel reacts with the oxygen in air
Sodium reacts with oxygen faster than nickel does
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.