Daily Practice
GCSE Science
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29th July 1975
- 1Moles, Formulae and Equations
Why is the amount of product directly proportional to the amount of limiting reactant?
- 2Concentration, Yield and Atom Economy
Give the formula for percentage yield.
- 3Chemical Changes
Write the word equation for the reaction between zinc and hydrochloric acid.
- 4Reactivity, Acids and Salts
Give the ionic equation for neutralisation.
- 5Electrolysis
In the industrial extraction of aluminium, explain why the carbon anodes need to be replaced regularly.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1975, including the monthly compilation PDF.