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Alloys and their properties
Explain that alloys are combinations of a metal with other elements, such as brass, which is made from copper and zinc, and stainless steel, which consists of iron mixed with elements like chromium, nickel, and carbon.
5
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50
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35
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90 min
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CambridgeIGCSECombined ScienceMetals
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Alloys and their properties outcomes5 objectives
- Explain that alloys are combinations of a metal with other elements, such as brass, which is made from copper and zinc, and stainless steel, which consists of iron mixed with elements like chromium, nickel, and carbon.
- Recognize that alloys often possess greater hardness and strength compared to pure metals, making them more practical for various applications.
- Discuss how the physical properties of alloys, such as stainless steel, make them suitable for specific uses, like cutlery, due to their hardness and rust resistance.
- Identify and interpret diagrams that illustrate the structure of various alloys.
- Clarify how the structural differences in alloys, due to the presence of differently sized atoms, contribute to their increased hardness and strength by preventing atomic layers from sliding over one another.
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