3.1 Collision Theory
3.1.1. Concentration and Collisions
LO: I understand how the concentration affects the rate of a reaction.
Collision theory states that substances can only react with each other if:
(i) The particles collide with each other and(ii) The collision has enough energy.
The the concentration of acid, the the number of collisions.
The the number of collisions the the rate of reaction.
LO: I understand how the concentration affects the rate of a reaction.
greaterhigher
highergreater
3.1.2 Particle Size and Collisions
LO: I understand how the particle size affects the rate of a reaction
Collisions can only take place on the of a solid.
The greater the surface area the the number of collisions.
The smaller the particle size the the surface area.
LO: I understand how the particle size affects the rate of a reaction
surface
greater
greater
3.1.3 Temperature and Collisions
LO: I understand how the temperature affects the rate of a reaction.
Increasing the temperature makes the particles:
The greater the temperature the the rate of the reaction.
• move and collide more often
LO: I understand how the temperature affects the rate of a reaction
• collide with more .
In general, the rate doubles for every increase in temperature.
fasterenergy
greater
10˚C