GCSE Chemistry – Extraction of iron

Last updated: 06/07/2020

CCEA GCSE Science – Combined science foundation Redox, rusting and iron GCSE Chemistry – Extraction of iron

Learning Objectives

-I can describe the extraction of iron in the blast furnace
-I can describe the formation of slag in the blast furnace

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Question 1 of 26

1. Question
What is iron extracted from?
- Iron ore
- Carbon
- Metal slab
- Carbon ore
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Question 2 of 26

2. Question
What is the name for an iron ore?
- Haematite
- Bauxite
- Borax
- Cryolite
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Question 3 of 26

3. Question
What does an iron ore contain?
- Iron(III) oxide
- Iron(III) hydroxide
- Iron(II) oxide
- Iron(II) hydroxide
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Question 4 of 26

4. Question
What is iron extracted from its ore in?
- Blast furnace
- Distillation column
- Bioleacher
- Carbon ore
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Question 5 of 26

5. Question
Other than the iron ore, what is added to the blast furnace?
- Calcium carbonate
- Magnesium oxide
- Magnesium carbonate
- Calcium oxide
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Question 6 of 26

6. Question
Other than the iron ore, what is added to the blast furnace?
- Carbon
- Tin
- Silver
- Copper
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Question 7 of 26

7. Question
What is another name for the carbon added to the blast furnace?
- Coke
- Haematite
- Bauxite
- Cryolite
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Question 8 of 26

8. Question
What is another name for calcium carbonate?
- Limestone
- Bromine water
- Iron
- Copper
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Question 9 of 26

9. Question
What is the iron(III) oxide reduced to in a blast furnace?
- Molten iron
- Iron hydroxide
- Solid iron
- Iron sulfate
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Question 10 of 26

10. Question
What does iron(III) oxide react with in the blast furnace?
- Carbon monoxide
- Carbon dioxide
- Oxygen
- Nitrogen
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Question 11 of 26

11. Question
Write the equation for the reaction between iron(III) oxide and carbon monoxide.
- iron(III) oxide + carbon monoxide -> iron + carbon dioxide
- iron(III) oxide + carbon monoxide -> iron + carbon monoxide
- iron(III) oxide + carbon monoxide -> iron hydroxide + carbon dioxide
- iron(III) oxide + carbon monoxide -> iron + oxygen
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Question 12 of 26

12. Question
Write the symbol equation for the reaction between iron(III) oxide and carbon monoxide.
- $Fe_2O_3(s) + 3CO(g) -> 2Fe(l) + 3CO_2(g)$
- $Fe_2O_3(s) + CO(g) -> 4Fe(l) + O_2(g)$
- $Fe_2O_3(s) + 3CO(g) -> 2Fe(s) + 3CO_2(g)$
- $Fe_2O_3(s) + 3CO(g) -> 2Fe(l) + 3O_2(g)$
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Question 13 of 26

13. Question
What happens to the calcium carbonate in the blast furnace?
- Decomposes
- Reacts with iron(III) oxide
- Explodes
- Neutralises the iron(III) oxide
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Question 14 of 26

14. Question
Write the equation for the decomposition of limestone.
- calcium carbonate -> calcium oxide + carbon dioxide
- calcium carbonate -> calcium oxide + oxygen
- calcium carbonate -> calcium hydroxide + oxygen
- calcium carbonate -> calcium hydroxide + carbon dioxide
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Question 15 of 26

15. Question
Write the symbol equation for the decomposition of limestone.
- $CaCO_3(s) -> CaO(s) + CO_2(g)$
- $CaCO_3(s) -> CaO(s) + 2CO_2(g)$
- $CaCO_3(s) -> Ca(OH)_2(s) + CO_2(g)$
- $CaCO_3(s) -> CaO(s) + O_2(g)$
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Question 16 of 26

16. Question
What product forms during the decomposition of limestone?
- Calcium oxide
- Magnesium oxide
- Calcium hydroxide
- Magnesium hydroxide
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Question 17 of 26

17. Question
What does the calcium oxide react with in the blast furnace?
- Silicon dioxide
- Carbon monoxide
- Iron(III) oxide
- Coke
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Question 18 of 26

18. Question
Where does silicon dioxide come from in the blast furnace?
- Impurities in iron ore
- Carbon
- Coke
- Limestone
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Question 19 of 26

19. Question
What type of reaction occurs when calcium oxide is reacted with silicon dioxide?
- Neutralisation
- Decomposition
- Displacement
- Disproportionation
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Question 20 of 26

20. Question
Write the equation for the reaction between calcium oxide and silicon dioxide.
- calcium oxide + silicon dioxide -> calcium silicate
- calcium oxide + silicon dioxide -> calcium carbonate + carbon dioxide
- calcium oxide + silicon dioxide -> calcium silicate + water
- calcium oxide + silicon dioxide -> calcium carbonate
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Question 21 of 26

21. Question
Write the symbol equation for the reaction between calcium oxide and silicon dioxide.
- $CaO(s) + SiO_2(s) -> CaSiO_3(l)$
- $CaO(s) + SiO_2(s) -> CaSiO_3(l) + O_2(g)$
- $CaO(s) + SiO_2(s) -> CaSiO_3(l) + CO_2(g)$
- $CaO(s) + CO_2(s) -> CaO_3(l)$
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Question 22 of 26

22. Question
What product forms when calcium oxide is reacted with silicon dioxide?
- Calcium silicate
- Calcium carbonate
- Calcium chlorate
- Copper carbonate
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Question 23 of 26

23. Question
What is another name used for calcium silicate?
- Slag
- Coke
- Haematite
- Ore
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Question 24 of 26

24. Question
What process occurs during the extraction of iron in a blast furnace?
- Displacement
- Neutralisation
- Titration
- Electrolysis
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Question 25 of 26

25. Question
Why is carbon used within the blast furnace?
- As it is more reactive than iron
- As it is less reactive than calcium
- As it is more reactive than calcium
- As it is less reactive than iron
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Question 26 of 26

26. Question
What is iron used for?
- Bridges
- Electrical wires
- Aeroplanes
- Microchips
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