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Alloy

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Key Stage 3

Meaning

An alloy is a metal with one or more other elements mixed with it, usually other metal elements.

About Alloys

Adding different elements to a metal to make an alloy can change the properties of that metal.

Examples

BronzeShield.png
BrassTap.png
MetalSword.png
Bronze was one of the first alloys ever made and is made from around 88% Copper and 12% Tin. Brass is a very strong alloy made form a mixture of Copper and Zinc. Steel is an alloy of around 98% Iron and 2% Carbon.

Key Stage 4

Meaning

An alloy is a mixture of a metal and one or more other elements, usually other metal elements.

About Alloys

Adding different elements to a metal to make an alloy can change the physical and chemical properties.
Alloys are made to change the properties of a metal to make it more useful for certain applications.

Examples

Metals Properties Applications
88% Copper + Tin

(Bronze)

Resistant to corrosion

Harder than Copper.

Statues and ornaments.
Copper + Zinc

(Brass)

Resistant to corrosion

Harder than Copper.

Malleable enough to hammer into shape.

Pins in electrical plugs, keys, taps, door handles.
Gold + Copper Harder than pure Gold Jewelry
98% Iron + Carbon

(Steel)

Much harder than pure Iron.

Malleable enough to be hammered into shape.

Car bodies, bridges, cables, girders.
85% Iron + 11% Chromium + Nickel + Carbon

(Stainless Steel)

Much harder than pure Iron.

Resistant to corrosion.

Cutlery, reaction vessels

References

AQA

Alloys, page 120, GCSE Combined Science; The Revision Guide, CGP, AQA'
Alloys, page 162, GCSE Combined Science Trilogy 1, Hodder, AQA'
Alloys, page 266, GCSE Chemistry; Student Book, Collins, AQA'
Alloys, page 91, GCSE Combined Science Trilogy; Chemistry, CGP, AQA'
Alloys, pages 156, GCSE Combined Science Trilogy 2, Hodder, AQA'
Alloys, pages 35, 97, GCSE Chemistry; The Revision Guide, CGP, AQA'
Alloys, pages 46, 204, 257-8, GCSE Chemistry, Hodder, AQA'
Alloys, pages 54-55, 222-223, GCSE Chemistry; Third Edition, Oxford University Press, AQA'
Alloys, pages 93, 285, 286, GCSE Chemistry, CGP, AQA'

Edexcel

Alloy steels, page 102, GCSE Chemistry, Pearson, Edexcel
Alloys, page 63, GCSE Chemistry; The Revision Guide, CGP, Edexcel
Alloys, pages 102-103, 203, GCSE Chemistry, Pearson, Edexcel
Alloys, pages 179, 180, 315, GCSE Chemistry, CGP, Edexcel
Alloys; uses, pages 104-105, GCSE Chemistry, Pearson, Edexcel

OCR

Alloys, page 96, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR
Alloys, pages 24, 78, GCSE Chemistry; The Revision Guide, CGP, OCR Gateway
Alloys, pages 40, 53, 214-215, Gateway GCSE Chemistry, Oxford, OCR