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Cambridge IGCSE Chemistry practice

What is the main reason alloys are harder than pure metals?

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Show answerAlloys and their properties revisionRevise the key idea

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Alloys and their properties

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What is the main reason alloys are harder than pure metals?.

  1. A.They have a regular atomic structure
  2. B.They contain atoms of different sizes
  3. C.They are made of only one type of metal
  4. D.They are always stronger than pure metals

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Paper 4 structured question: Alloys and their properties

Paper 4Theory (Extended)1 marks

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Properties of Alloys

Alloys are mixtures of metals that exhibit improved hardness and strength compared to pure metals. The presence of atoms of different sizes disrupts the regular arrangement of atoms, making it harder for the layers to slide past each other.

  1. a

    State one reason why alloys are stronger than pure metals.

    Aim for approximately 1 distinct marking point.

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