Revision Library
/Subjects/Science/Daily Practice
Daily Practice

GCSE Science

← All tiers

11th February 1987

5 questions · GCSE · 584 questions in this band

Download questions PDFDownload answers PDF
  1. 1
    Concentration, Yield and Atom Economy

    Give the formula for atom economy.

  2. 2
    Chemical Changes

    State the pH value of a neutral solution.

  3. 3
    Reactivity, Acids and Salts

    Why is aluminium extracted by electrolysis rather than by reduction with carbon?

  4. 4
    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.

  5. 5
    Energy Changes

    Using the values in the previous question, calculate the overall energy change for the reaction.

You are looking at an earlier sheet. Today's sheet is the one that adds a day.

Your run is kept in this browser only, and there is no account.

Recent GCSE Science sheets

Any date always gives the same five questions, so a sheet can be set again or shared. All of February 1987, including the monthly compilation PDF.

11th February 198710th February 19879th February 19878th February 19877th February 19876th February 19875th February 19874th February 19873rd February 19872nd February 19871st February 198731st January 198730th January 198729th January 1987