Effect of Particle Size

• As the particle size decreases, the surface area increases
• As the surface are increase, the are available for collisions to happen increases
• Increasing the concentration of reactants will increase the number of collisions

  
• As the temperature increases:

  • the amount of energy a particle has increases
  • the faster the particle moves around
  • the more likely particles are to collide

  -> the rate of reaction increases
• All chemical reactions produce new substances
• The speed of a reaction can be found by measuring how fast the new substance is formed