Across
- 3. The type of steel used to make cutlery and surgical instruments
- 6. Environmental cost of smelting iron caused by carbon dioxide gas (6,7)
- 7. A rock that contains a useful metal compound
- 8. Environmental cost of smelting iron caused by sulphur dioxide gas (4,4)
- 9. A yellow metal commonly found as a native metal
- 10. Process of losing electrons
- 13. The iron ore containing Fe3O4
- 15. Process of gaining electrons
Down
- 1. The iron ore containing Fe2O3
- 2. The element in steel other than iron
- 4. A poisonous gas and reducing agent in the blast furnace (6,8)
- 5. When a protective coating of zinc is used to protect iron from rusting
- 11. Oxidation is the gain of ...
- 12. The carbon containing substance burned in a blast furnace
- 14. Hydrated iron oxide