Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
31st August 2008
- 1Concentration, Yield and Atom Economy
State two reasons why a percentage yield is less than 100 percent.
- 2Chemical Changes
State the pH value of a neutral solution.
- 3Reactivity, Acids and Salts
Complete: acid + metal carbonate gives ...
- 4Electrolysis
Molten zinc chloride, ZnCl2, is electrolysed using inert electrodes. Write the half equation for the reaction at (a) the cathode, and (b) the anode.
- 5Energy Changes
Using the values in the previous question, calculate the overall energy change for the reaction.
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Every sheet is deterministic: the same date always regenerates the same five questions. All of August 2008, including the monthly compilation PDF.