As temperature increases, particles move around faster.
They collide more often with more energy
Collision is more likely to have enough energy to react successfully
Increasing concentration
More particles = more collision
Increasing surface area
Breaking it into smaller pieces means increasing the surface area to volume ratio. This means, for the same volume of solid, the particles will have a greater area over which they can collide.
Collision theory
For partilces to react, they have to collide with sufficient energy at the right direction
Activation energy
Amount of energy particles require to react together
Why do particles need activation energy
They need energy to break bonds of reactants, so the reaction can begin
Catalysts
Speed up reactions by lowering the activation energy required for a reaction to occur. This is done by giving an alternative reaction pathway that requires less energy
