Daily Practice

GCSE Science

23rd September 1992

5 questions · GCSE · 584 questions in this band

1
Exothermic and Endothermic Reactions
State the energy transfer that occurs during an endothermic reaction.
2
Bond Energies, Cells and Fuel Cells
State the two substances that react inside a hydrogen fuel cell.
3
Rate and Extent of Chemical Change
State what is meant by a catalyst.
4
Rates of Reaction
Explain why increasing temperature increases the rate of a reaction, referring to both the frequency and the energy of collisions.
5
Reversible 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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