Iron
Iron Ore Extraction
Equations
Define me
Iron Ore Extraction
100
What is Hematite
The most common type of Iron Ore
100

Explain in terms of oxidation states, why extraction of Iron from Iron (III) oxide is reduction reaction. 

The oxidation state of Iron decreases from +3 to 0, which means it gains electrons.

100

The burning of carbon (coke) in the blast furnace

C (s) + O2 (g) → CO2 (g)

100

What is the chemical formula for haematite?

Fe₂O₃

100

The main reducing agent of Iron Ore

Carbon monoxide (CO)

200
What is rusting
A reaction that occurs when Iron comes in contact with water and oxygen
200

Identify the exothermic reaction in blast furnace

The burning of carbon (coke) to provide heat and produce carbon dioxide

200

The reduction of carbon dioxide using coke

CO2 (g) + C (s) → 2CO (g)

200

Define reducing agent.

A reducing agent is a substance that donates electrons to another substance during a chemical reaction, thereby reducing (removing oxygen from) that substance.

200

The temperature of the furnace is ______________.

2000 degrees celsius

300
What is steel
98% of Iron is used to create this metal
300
  • Describe the environmental impacts associated with the extraction of iron using a blast furnace.

Carbon Dioxide Emissions: The combustion of coke (a carbon-rich fuel derived from coal) in the blast furnace releases a large amount of CO₂, contributing to global warming and climate change.

300

Reduction of Iron (III) oxide in the blast furnace

Fe2O3 (s) + 3CO (g) → 2Fe (I) + 3CO2 (g)

300

Define oxidising agent.

An oxidizing agent is a substance that accepts electrons from another substance during a chemical reaction, thereby oxidizing (adding oxygen to) that substance. In the context of chemical reactions, the oxidizing agent itself gets reduced by gaining electrons.

300

What is coke

The heating agent in the blast furnace

400
→ Fe(s)
Finish the Equation: Fe2O3
400

How the sand impurity is removed from the iron obtained in the blast furnace

•The thermal decomposition of calcium carbonate (limestone) to produce calcium oxide:

CaCO3 (s) → CaO (s) + CO2 (g)

•The formation of slag:

CaO (s) + SiO2 (s) → CaSiO3 (l)

400

Thermal Decomposition of Limestone. Include state symbols.

CaCO3 (s) → CaO (s) + CO2 (g)

400

What temperature is typically maintained in the hottest part of a blast furnace?

2000°C

400
What is Silica
The main impurity of Iron Ore
500
What is 2000 BCE
The date Iron was first used
500

Suggest why the reaction of calcium oxide with silicon (IV) oxide is a neutralisation reaction.

It is a neutralisation reaction because a basic oxide (CaO) is reacting with acidic oxide (SiO2) to form salt (CaSiO3)

500

The formation of slag. Include the state symbols.

Write the chemical name for slag.

CaO (s) + SiO2 (s) → CaSiO3 (l)

Calcium silicate

500

What is the main purpose of hot air being blasted into the furnace?  

To provide oxygen for combustion

500
Slag (CaSiO3)
The main byproduct of iron production
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