collision theory

• collision theory:

  • chemical reactions can only occur when reacting particles collide with each other and with sufficient energy
• Activation energy

  • the minimum amount of energy that particles must have to react
• Catalyst

  • reduces the amount of activation energy required
  • more cost affective
• Concentration, pressure and surface area

  • more particles in the same space
  • increases the frequency of collisions per second
  • particles are used up quicker
  • increases the rate of reaction
• Temperature

  • increases the frequency of collisions per second
  • particles are used up faster
  • Also makes the collisions more energetic (particles move faster)
  • increases the rate of reaction