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Chemistry · May / June 2024 · Paper 41 · Question 6

0620

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This question is about metals.

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  • 6(a)(i)[1]

    limestone

    OR

    calcium carbonate

  • 6(a)(ii)[1]

    (molten) iron

  • 6(a)(iii)[1]

    silicon(IV) oxide

    OR

    silicon dioxide

  • 6(a)(iv)[1]

    coke or carbon and oxygen

  • 6(a)(v)[2]

    Any two from:

    nitrogen
    carbon dioxide
    argon

  • 6(b)(i)[1]

    the temperature in the furnace is above or higher than the boiling point of zinc ORA

    OR

    the boiling point of zinc is below or less than the temperature of the furnace ORA

  • 6(b)(ii)[1]

    condensation / condensing

  • 6(c)(i)[1]

    galvanising

  • 6(c)(ii)[2]

    M1 zinc is more reactive than iron (1)

    M2 zinc is oxidised /

    zinc loses electrons /

    zinc forms positive ions /

    zinc forms zinc ions (1)

  • 6(d)(i)[1]

    amphoteric

  • 6(d)(ii)[1]

    Na2ZnO2

  • 6(d)(iii)[1]

    zinc sulfate

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