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Across 3. Chemical name for limestone 6. Name given to the furnace used to extract iron 8. Name for the iron ore 9. Where is the waste product found in a blast furnace in relation to the iron produced - above or below the iron? 10. One of the 3 substances used in the extraction of iron from its ore and a reducing agent 12. This is blasted into the blast furnace to provide oxygen for the combustion of the coke 14. Metals that are more reactive than carbon are extracted form their ores by a process called ___________ 15. General name of the waste product produced in the blast furnace 16. One of the 3 substances used in the extraction of iron from its ore which reacts with silicon dioxide impurities in the iron ore

Down 1. Name of the the reaction that occurs when calcium carbonate is heated and broken down in the blast furnace 2. This is produced when calcium oxide is heated in the blast furnace 3. Chemical name for the waste product produced in the blast furnace 4. The actual reducing agent in the blast furnace is _____________ ___________ 5. The iron oxide is _______________ when it reacts in a blast furnace. 7. Name of the aluminium ore 11. The reaction between coke and oxygen in the blast furnace is described as being ____________ as it produces heat energy 13. Produced as a result of a neutralisation reaction between calcium oxide and silicon dioxide