Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
21st January 2025
- 1Exothermic and Endothermic Reactions
On a reaction profile diagram, the reactants are drawn at a higher energy level than the products. State whether the reaction is exothermic or endothermic.
- 2Bond Energies, Cells and Fuel Cells
State the difference between a rechargeable cell and a non-rechargeable cell.
- 3Rate and Extent of Chemical Change
State the equation for the mean rate of a reaction in terms of the quantity of reactant used.
- 4Rates of Reaction
Explain why increasing temperature increases the rate of a reaction, referring to both the frequency and the energy of collisions.
- 5Reversible Reactions and Equilibrium
State the effect of increasing the temperature on the position of equilibrium of a reaction whose forward reaction is exothermic.
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