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GCSE Science

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22nd February 1955

5 questions · GCSE · 584 questions in this band

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  1. 1
    Moles, Formulae and Equations

    Why is the amount of product directly proportional to the amount of limiting reactant?

  2. 2
    Concentration, Yield and Atom Economy

    Give the formula for percentage yield.

  3. 3
    Chemical Changes

    Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.

  4. 4
    Reactivity, Acids and Salts

    Give the ionic equation for neutralisation.

  5. 5
    Electrolysis

    Molten zinc chloride, ZnCl2, is electrolysed using inert electrodes. Write the half equation for the reaction at (a) the cathode, and (b) the anode.

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