The reactivity of metals determines the method used to extract them from their ores. Highly reactive metals must be extracted using electrolysis of their molten compounds, metals of moderate reactivity can be reduced by heating with carbon, and extremely unreactive metals are found native in the Earth's crust.
Consider the following list of metals:
Which row in the table correctly classifies the extraction method for each of these metals?
| Extracted by electrolysis | Extracted by heating with carbon | Found native | |
|---|---|---|---|
| A | Zinc, Iron | Gold, Platinum | Magnesium, Aluminium |
| B | Magnesium, Gold | Aluminium, Iron | Zinc, Platinum |
| C | Magnesium, Aluminium | Zinc, Iron | Gold, Platinum |
| D | Aluminium, Platinum | Magnesium, Zinc | Iron, Gold |
Row A
Row B
Row C
Row D
81 exam-style questions on OCR GCSE Chemistry Improving processes and products. Each one has a worked solution and a mark scheme showing where the marks go.