Daily Practice · GCSE Science

Daily Practice - GCSE Science

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

6th August 1999

5 questions · GCSE · 584 questions in this band

1
Moles, Formulae and Equations
Define the limiting reactant.
2
Concentration, Yield and Atom Economy
Why do companies prefer reactions with a high atom economy?
3
Chemical Changes
Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.
4
Reactivity, Acids and Salts
State what is observed when magnesium ribbon is added to copper sulfate solution.
5
Electrolysis
State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.

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