reactions take place when particles collide with a certain amount of energy.
what is activation energy?
the minimum amount of energy needed for the particles to react
what does the rate of reaction depend on?
the frequency of collisions between particles
the energy with which particles collide
what are the 4 factors that affect the rate of reaction?
temperature —> higher the temp, faster the reaction
surface area —> if a solid is split into several pieces, the surface area increases. greater surface area = more collisions + greater chance of reaction
concentration —> higher concentration = more particles in same amount of space meaning particles more likely to collide and react
catalysts —> lower the reactants activation energy
