Who this is for: Cambridge IGCSE Coordinated Science (0654) students who want uses of metals — linking properties to real applications — to become reliable marks instead of disconnected examples.
What query it owns: how to understand and revise uses of metals in Cambridge IGCSE Coordinated Science.
Why this is safe: this page owns the uses-of-metals revision-guide angle, while Tutopiya’s Uses Of Metals subtopic page owns the learning resource and the free Uses Of Metals quiz owns the practice.

Every metal use in the syllabus is linked to a physical or chemical property. Cambridge IGCSE Coordinated Science (0654) expects you to match metals and alloys to applications — aluminium for aircraft, copper for wiring, iron and steel for construction — and explain why each property makes the metal suitable. This guide covers the syllabus examples, property-to-use tables and the question types that appear every year.

Key takeaways

• Aluminium: low density, resistant to corrosion (oxide layer) → aircraft, food containers, overhead power cables.
• Copper: excellent electrical conductor, ductile → electrical wiring, plumbing.
• Iron / steel: strong, high melting point → construction, bridges, vehicles; stainless steel resists rust (chromium added).
• Brass (Cu + Zn) and bronze (Cu + Sn) are alloys with improved hardness and corrosion resistance.
• Exam answers must link property → use — not just name the metal.

What are uses of metals in Cambridge IGCSE Coordinated Science?

Uses of metals covers how physical and chemical properties determine where each metal is used in everyday life and industry. Examiners frequently ask you to suggest a use and explain why a property makes the metal suitable, or to identify which metal fits a given application.

You can read the full explanation, diagrams and notes on Tutopiya’s Uses Of Metals subtopic page before you attempt questions.

The core ideas you must master

Idea	What it means	How the exam uses it
Property → use link	Every suggestion needs a reason	”Explain why aluminium is used in aircraft.”
Alloys vs pure metals	Alloys often harder / more resistant	”Suggest why stainless steel is used for cutlery.”
Corrosion resistance	Oxide layer or alloy composition	”Why is aluminium suitable for food cans?”
Conductivity	Copper for electrical uses	”Why is copper used for wiring?”
Strength / density	Steel for structure; Al for lightweight	”Compare uses of steel and aluminium.”

Metals, properties and uses

Metal / alloy	Key properties	Common uses
Aluminium (Al)	Low density, malleable, corrosion-resistant (oxide layer)	Aircraft, food cans, foil, overhead cables
Copper (Cu)	Excellent electrical and thermal conductor, ductile	Electrical wiring, water pipes, heat exchangers
Iron (Fe) / steel	Strong, hard, high melting point	Construction, girders, bridges, car bodies
Stainless steel	Iron + chromium (+ nickel); resists rust	Cutlery, surgical instruments, sinks
Brass (Cu + Zn)	Hard, corrosion-resistant, attractive	Musical instruments, fittings, ornaments
Bronze (Cu + Sn)	Hard, strong, resists corrosion	Statues, bearings, medals
Zinc (Zn)	Sacrificial protection (galvanising)	Coating iron to prevent rust
Lead (Pb)	High density, soft, shields radiation	Radiation shielding, batteries (historical)
Gold (Au)	Unreactive, attractive	Jewellery, electrical contacts
Silver (Ag)	Best electrical conductor, attractive	Jewellery, photographic film (historical)

Choosing the right metal — decision table

Application required	Property needed	Best choice
Electrical wiring	High conductivity, ductile	Copper
Aircraft body	Low density, strong, corrosion-resistant	Aluminium (alloys)
Building framework	Strong, high melting point	Steel
Food packaging	Light, malleable, corrosion-resistant	Aluminium
Outdoor iron structures	Prevent rust	Galvanised iron (zinc coating)
Kitchen equipment	Hard, rust-resistant	Stainless steel

Uses of metals in past-paper wording: command words that matter

Command word / phrase	What the question wants	Typical uses of metals stem
Suggest a use	Application + reason	”Suggest a use of copper and explain why.”
Explain why	Property linked to use	”Explain why aluminium is used for overhead power cables.”
State	Name metal or alloy	”State a metal used in electrical wiring.”
Compare	Two metals for same/different uses	”Compare the uses of aluminium and iron.”
Give an example	Specific alloy or application	”Give an example of an alloy and its use.”

Worked exam-style stems (how to answer the wording)

1. “Explain why copper is used to make electrical wires.” Copper is an excellent electrical conductor and is ductile, so it can be drawn into long thin wires that carry current efficiently. Mark-scheme reward: good conductor + ductile/drawn into wires.
2. “Suggest why aluminium is used to manufacture aircraft bodies.” Aluminium has a low density (making the aircraft lighter) and forms a protective oxide layer that resists corrosion. Reward: low density/light + corrosion resistant.
3. “Explain why iron is galvanised with zinc.” Zinc is more reactive than iron and corrodes preferentially (sacrificial protection), preventing the iron underneath from rusting even if the coating is scratched. Reward: zinc more reactive + sacrificial protection + prevents rust.

Practise on the Uses Of Metals quiz.

How uses of metals connect to the rest of Coordinated Science chemistry

Uses of metals follow Properties of Metals and Extraction Of Metals From Their Ores. The Cambridge IGCSE Coordinated Science resource hub links every Chemistry subtopic.

Common mistakes students make

• Naming a use without explaining the property (always link property → use).
• Stating iron is used for wiring (it is copper — much better conductor).
• Confusing brass (Cu + Zn) with bronze (Cu + Sn).
• Forgetting aluminium’s oxide layer when explaining corrosion resistance.
• Describing galvanising without mentioning sacrificial protection.

When you need more support

If uses-of-metals questions keep costing marks, work through the Uses Of Metals quiz, then get focused help from a Cambridge IGCSE Coordinated Science tutor.

Frequently asked questions

Why is aluminium used in aircraft? It has a low density (lightweight) and resists corrosion due to its protective oxide layer.

What is galvanising? Coating iron or steel with zinc so the zinc corrodes preferentially and protects the iron from rusting.

Why are alloys used instead of pure metals? Alloys are often harder, stronger or more corrosion-resistant because different-sized atoms disrupt the regular lattice.

How do I revise uses of metals effectively? Learn the property-to-use table for Al, Cu, Fe/steel and key alloys, practise explain questions, then take the Uses Of Metals quiz.

Ready to master Cambridge IGCSE Coordinated Science uses of metals?

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