Unit 16: Extractions of Metals
Instructions:
• Answer all questions to the best of your ability.
• Use complete sentences where required.
• Review your answers before submitting the worksheet.
• Answers will be discussed in class once we get back.
• Answer all questions in the Chemistry notebook.
Worksheet: Understanding the Extraction of Iron
Name: _______________
Date: ________________
Section 1: Basic Knowledge
1. What is the primary ore from which iron is extracted?
a) Bauxite
b) Hematite
c) Galena
d) Sphalerite
Answer: ___
2. What is the purpose of the blast furnace in iron extraction?
a) To cool down the iron
b) To purify water
c) To extract iron from its ore
d) To store materials
Answer: ___
3. What is coke primarily made of?
a) Wood
b) Coal
c) Limestone
d) Iron ore
Answer: ___
Section 2: Understanding the Process
4. Explain the role of carbon in the extraction of iron from hematite.
Answer: ________________________________________
5. What are the main products formed when carbon reacts with oxygen in the blast
furnace?
a) Nitrogen and heat
b) Carbon monoxide and carbon dioxide
c) Hydrogen and oxygen
d) Sulfur and heat
Answer: ___
6. Describe how limestone contributes to the extraction of iron.
Explain what is slag, What is its chemical name.
Answer: ________________________________________
7. Match the following reactions with their correct descriptions:
Which reaction is missing from the above list? Give the reaction and its description.
________________________________________
Section 3: Application and Analysis
8. Why is it important to remove impurities from iron during the extraction process?
Answer: ________________________________________
9. How does the position of iron in the reactivity series affect its extraction?
Answer: ________________________________________
10. In the extraction of iron, what happens during the reduction of iron(III) oxide?
Write the chemical equation for this reaction.
Answer: ________________________________________
Section 4: Reflection
11. In your own words, summarize the entire extraction process of iron from hematite.
Include the steps and the chemical reactions involved.
Answer: ________________________________________
12. What do you think are the environmental impacts of iron extraction, and how can
they be mitigated?
Answer: ________________________________________
Part B
Questionnaire: Extraction of Aluminium
Understanding Key Concepts
1. What is the main ore of aluminium?
Answer: ____________________________________________
2. Describe the process used to extract aluminium from bauxite. What role does
electrolysis play in this process?
Answer: ____________________________________________
3. What is the chemical formula of cryolite, and why is it used in the extraction of
aluminium?
Answer: ____________________________________________
4. Explain the function of carbon anodes in the electrolysis of aluminium. Why do
they need to be replaced regularly?
Answer: ____________________________________________
Chemical Reactions
5. List the ionic half-equations for the reactions occurring at the electrodes during the
electrolysis of aluminium.
Answer: ____________________________________________
6. Match the following reactions with their correct descriptions:
Application of Knowledge
7. Explain the significance of using cryolite in the electrolysis process.
Answer: ____________________________________________
8. Why is it important to regularly replace carbon anodes in the electrolysis of
aluminium?
Answer: ____________________________________________
9. Summarize the entire process of aluminium extraction from bauxite in your own
words.
Part 4: Reflection
10. What was the most interesting thing you learned about the extraction of
aluminium and iron?
Answer: ____________________________________________
11. How can the knowledge of these extraction processes be applied in real-world
situations or industries?
Answer: ____________________________________________
