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Chemistry · Oct / Nov 2021 · Paper 41 · Question 1

0620

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The question as text

Some elements are shown in the order they appear in the reactivity series. The most reactive element is at the top. sodium calcium magnesium aluminium zinc iron hydrogen copper

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Show the answer and mark scheme

  • 1(a)(i)[1]

    hydrogen

  • 1(a)(ii)[1]

    sodium

  • 1(a)(iii)[1]

    iron

  • 1(a)(iv)[1]

    aluminium

  • 1(a)(v)[1]

    zinc or copper

  • 1(a)(vi)[1]

    iron

  • 1(b)(i)[1]

    zinc blende

  • 1(b)(ii)[1]

    bauxite

  • 1(c)[1]

    protective oxide layer

  • 1(d)[2]

    Any 2 from 3

    zinc
    iron
    copper

  • 1(e)(i)[1]

    copper

  • 1(e)(ii)[1]

    zinc sulfate

  • 1(e)(iii)[3]

    M1 particles have more energy

    M2 More collisions (between particles) occur per second / per unit time

    M3 A greater percentage / proportion / fraction of collisions (of particles) are successful / have energy above activation energy / have energy equal to activation energy

  • 1(e)(iv)[2]

    Any 2 from 3:

    use a catalyst
    use smaller granules
    increase concentration
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