A technician compares two unknown powdered metals, X and Y. X, Y, zinc, iron and copper are five different metals.
The known order of three metals is zinc, iron, copper, from most reactive to least reactive.
The technician records these results.
| Test | Observation |
|---|---|
| X is added to zinc sulfate solution | A coating of metal forms |
| Y is added to zinc sulfate solution | No reaction |
| Y is added to iron(II) sulfate solution | A coating of metal forms |
Using the results, give the complete order of X, Y, zinc, iron and copper from most reactive to least reactive.
The technician adds equal masses of X powder and Y powder, with the same particle size, to separate samples of copper(II) sulfate solution. The samples have the same volume, concentration and starting temperature.
Explain which unknown metal is predicted to produce the larger temperature rise.
113 exam-style questions on OCR GCSE Chemistry 4.1 Predicting chemical reactions, covering 4.1.1 Properties and trends in Groups 1, 7 and 0, 4.1.2 Properties of the transition metals, 4.1.3 Reactivity predicted from position in the Periodic Table, and 4.1.4 Reactivity of metals and the reactivity series. Each one has a worked solution and a mark scheme showing where the marks go.