Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
11th November 2018
- 1Bond Energies, Cells and Fuel Cells
State whether breaking a chemical bond requires energy or releases energy.
- 2Rate and Extent of Chemical Change
Explain, using collision theory, why increasing the concentration of a reactant in solution increases the rate of a reaction.
- 3Rates of Reaction
Explain why using a light sensor and data logger is more reliable than timing by eye in the disappearing cross practical.
- 4Reversible Reactions and Equilibrium
In the Haber process, N2(g) + 3H2(g) -> 2NH3(g), state the effect of decreasing the pressure on the position of equilibrium.
- 5Organic Chemistry
Define the term 'hydrocarbon'.
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