Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
2nd January 2022
- 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
In the gas-volume required practical measuring how concentration affects rate, state one variable that should be controlled.
- 4Reversible Reactions and Equilibrium
State what is meant by dynamic equilibrium.
- 5Organic Chemistry
State what happens to the boiling point of hydrocarbons as their chain length increases.
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