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Alloys and their properties
Explain that an alloy is formed by combining a metal with other elements, such as brass, which consists of copper and zinc, and stainless steel, which includes iron along 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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CambridgeIGCSEChemistryMetals
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Alloys and their properties outcomes5 objectives
- Explain that an alloy is formed by combining a metal with other elements, such as brass, which consists of copper and zinc, and stainless steel, which includes iron along with elements like chromium, nickel, and carbon.
- Acknowledge that alloys often possess greater hardness and strength compared to pure metals, making them more practical for various applications.
- Discuss the applications of alloys based on their physical characteristics, such as the use of stainless steel in cutlery due to its durability and resistance to corrosion.
- Recognize and interpret diagrams that depict the structure of various alloys.
- Clarify how the structural differences in alloys, due to the presence of atoms of varying sizes, contribute to their increased hardness and strength compared to pure metals, as the layers in alloys cannot slide past each other easily.
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