1. 3.1.1. Concentration and Collisions
3.1 Collision Theory
Concentration and Collisions
LO: I understand how the concentration affects the rate of a reaction.

2. (i) The particles collide with each other and
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.
higher
greater
The the number of collisions the the rate of reaction.
higher
greater
LO: I understand how the concentration affects the rate of a reaction.

3. 3.1.2 Particle Size and Collisions
LO: I understand how the particle size affects the rate of a reaction

4. Collisions can only take place on the of a solid.
surface
The smaller the particle size the the surface area.
greater
The greater the surface area the the number of collisions.
greater
LO: I understand how the particle size affects the rate of a reaction

5. 3.1.3 Temperature and Collisions
LO: I understand how the temperature affects the rate of a reaction.

6. Increasing the temperature makes the particles:
move and collide more often
faster
collide with more
energy
The greater the temperature the the rate of the reaction.
greater
In general, the rate doubles for every increase in temperature.
10˚C
LO: I understand how the temperature affects the rate of a reaction