Question

state one use of copper and explain why copper is suitable for that use. 2 marks

state one use of aluminium and explain why aluminium is suitable for that use. 2 marks

state one use of steel and explain why steel is suitable for that use. 2 marks

Explanation:

Analyze copper properties and uses

• Use: Electrical wiring.
• Suitability: Excellent electrical conductivity and ductility.

Analyze aluminium properties and uses

• Use: Aircraft bodies.
• Suitability: Low density (lightweight) and high strength-to-weight ratio.

Analyze steel properties and uses

• Use: Construction of bridges and buildings.
• Suitability: High tensile strength and durability.

Answer:

Question 1

• Use: Electrical wiring.
• Explanation: Copper is an excellent conductor of electricity and is highly ductile, allowing it to be easily drawn into thin wires.

Question 2

• Use: Aircraft bodies.
• Explanation: Aluminium has a very low density, making it lightweight, yet it forms strong alloys that provide the necessary structural strength.

Question 3

• Use: Construction of bridges and building frameworks.
• Explanation: Steel has extremely high tensile strength and structural durability, allowing it to support heavy loads without breaking.