A student investigates nickel in the hydrogenation of oil.
| Condition | Time for the reaction to finish |
|---|---|
| No nickel added | 48 minutes |
| 0.50 g of nickel added | 12 minutes |
At the end of the reaction, the student recovers 0.50 g of nickel.
Give two observations from the investigation that show nickel is acting as a catalyst.
Nickel can form ions with charges of +2, +3 and +4. Sodium forms ions with a charge of +1.
Which of the two metals is more likely to be a transition metal?
Nickel is much harder than sodium.
Give one other physical property in which nickel is different from sodium.
91 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.