Increasing the concentration of reactants increases the number of collisions between particles,increasing the likelihood of successful collisions and therefore the rateofreaction.
what is the collision theory?
for particles to react, they have to collide with each other with sufficient energy (sufficient energy = activation energy)
the frequency of collisions is how often the particles collide. however not all collisions are successful. therefore MORE OFTEN means SUCCESSFUL COLLISIONS
the more energy a particle has, the more energy they can transfer during a collision
