Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
24th August 2017
- 1Concentration, Yield and Atom Economy
Convert 250 cubic centimetres into cubic decimetres.
- 2Chemical Changes
Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.
- 3Reactivity, Acids and Salts
Explain the difference between a strong acid and a concentrated acid.
- 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
Give one everyday example of an endothermic process.
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