Edexcel Chemistry Rates of Reaction Revision Notes

• 1The rate of reaction can be influenced by temperature, concentration, surface area, and the presence of a catalyst.
• 2Increasing temperature generally increases the rate of reaction due to higher kinetic energy of particles.
• 3Higher concentration of reactants leads to more frequent collisions, thus increasing the reaction rate.
• 4A larger surface area of solid reactants allows for more collisions, speeding up the reaction.
• 5Catalysts lower the activation energy required for a reaction, increasing the rate without being consumed.

The rate of reaction tells us how fast a chemical reaction happens. It can change depending on things like temperature, how concentrated the reactants are, and whether a catalyst is used. By changing these factors, we can speed up or slow down reactions.