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O LevelChemistryCambridge (CIE)Exam Questions9. Metals9.3 Alloys & their Properties

Alloys & their Properties (Cambridge (CIE) O Level Chemistry): Exam Questions

Exam code: 5070

1 hour14 questions

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9.3 Alloys & their Properties

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11 mark

Which diagram shows an alloy?

q1-9-2-easy-cie-igcse-chemistry

    Choose your answer

    21 mark

    Zinc has many uses in the home. The diagram shows two items that contain zinc.

    q4-9-1-easy-cie-igcse-chemistry

    In which of these items is zinc used as an alloy?

     

    bucket

    door-knocker

    A

    cross times

    ✓

    B

    ✓

    ✓

    C

    cross times

    cross times

    D

    ✓

    cross times

      Choose your answer

      31 mark

      Why are alloys harder than the pure metals from which they are made?

      • There are stronger bonds between the atoms

      • The atoms are all the same size 

      • The layers of atoms are distorted

      • The properties of each element have combined

      Choose your answer

      11 mark

      The structure of an alloy is shown below. Alloys are mixtures of metals with other metals or non-metals.

      q5-9-1-medium-cie-igcse-chemistry

      They are usually much stronger and harder than pure metals. Which statement explains these features?

      • The irregular sizes of the atoms distorts the regular arrangement in the metal structure, meaning more force is required to bend the metal

      • The irregular sizes of the atoms distorts the regular arrangement in the metal structure as the bonding is disrupted when the atoms are added

      • The regular sizes of the atoms distorts the irregular arrangement in the metal structure, meaning more force is required to bend the metal

      • A mixture of metals is tougher than a pure metal because a mixture has more intermolecular forces than a pure metal.

      Choose your answer

      21 mark

      The diagram shows the structure of an alloy.

      q30-cie-o-level-chemistry-specimen-2023-paper-1

      Which statement about alloys is correct?

      • Alloys can only be formed by mixing copper or iron with other metals.

      • Carbon and iron are the only two elements in stainless steel.

      • In an alloy there is attraction between positive ions and a ‘sea’ of delocalized electrons.

      • The alloy brass has a chemical formula.

      Choose your answer

      11 mark

      Brass is an alloy of two metals

      Which is the correct statement? 

      • The alloy will completely dissolve in dilute hydrochloric acid.

      • Brass is formed by a chemical reaction between two metals 

      • Brass can be represented by a chemical formula

      • One of the metals in the alloy will dissolve in dilute hydrochloric acid

      Choose your answer