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Daily Practice · GCSE Science

Daily Practice - GCSE Science

Biology, chemistry and physics recall, definition and calculation, drawn from every strand.

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25th January 2024

5 questions · GCSE · 584 questions in this band

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  1. 1
    Moles, Formulae and Equations

    Calculate the number of moles in 88 g of carbon dioxide. (Mr = 44)

  2. 2
    Concentration, Yield and Atom Economy

    State two reasons why a percentage yield is less than 100 percent.

  3. 3
    Chemical Changes

    Write the word equation for the reaction between zinc and hydrochloric acid.

  4. 4
    Reactivity, Acids and Salts

    Complete: acid + metal carbonate gives ...

  5. 5
    Electrolysis

    In the industrial extraction of aluminium, explain why the carbon anodes need to be replaced regularly.

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