Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
- 1Bond Energies, Cells and Fuel Cells
State the difference between a rechargeable cell and a non-rechargeable cell.
- 2Rate and Extent of Chemical Change
State the equation for the mean rate of a reaction in terms of the quantity of reactant used.
- 3Rates of Reaction
Explain why increasing the surface area of a solid reactant increases the rate of a reaction.
- 4Reversible Reactions and Equilibrium
State Le Chatelier's principle in your own words.
- 5Organic Chemistry
Balance the equation for the complete combustion of methane: CH4 + O2 -> CO2 + H2O
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