Daily Practice

GCSE Science

23rd October 1989

5 questions · GCSE · 584 questions in this band

1
Exothermic and Endothermic Reactions
State what is meant by the activation energy of a reaction.
2
Bond Energies, Cells and Fuel Cells
State whether forming a new chemical bond requires energy or releases energy.
3
Rate and Extent of Chemical Change
State the four factors that can increase the rate of a chemical reaction.
4
Rates of Reaction
Explain why increasing the surface area of a solid reactant increases the rate of a reaction.
5
Reversible Reactions and Equilibrium
State Le Chatelier's principle in your own words.

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