Daily Practice · GCSE Science
Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
- 1Concentration, Yield and Atom Economy
Give the formula for atom economy.
- 2Chemical Changes
State the pH value of a neutral solution.
- 3Reactivity, Acids and Salts
Why is aluminium extracted by electrolysis rather than by reduction with carbon?
- 4Electrolysis
State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.
- 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 May 2015, including the monthly compilation PDF.