Cambridge IGCSE Chemistry
9.3Alloys and their properties
Alloys and their properties in Cambridge IGCSE Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
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Learning objectives
What the syllabus expects you to be able to do.
- 9.3.1Describe an alloy as a mixture of a metal with other elements, including brass (copper and zinc) and stainless steel (iron with elements such as chromium, nickel and carbon).
- 9.3.2State that alloys can be harder and stronger than the pure metals and are therefore more useful.
- 9.3.3Describe uses of alloys linked to their physical properties, including stainless steel for cutlery because it is hard and resists rusting.
- 9.3.4Identify diagrams that represent the structure of an alloy.
- 9.3.5Supplement: explain, in terms of structure, that alloys can be harder and stronger than pure metals because atoms of different sizes stop the layers sliding over each other.
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Alloys and their properties
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