surface area of solids

• what happens if a solid reactant is in a large lump?

  any particles in the solution can only collide with the particles on the surface of the solid
• would you have a slower or quicker reaction using large marble chips in an experiment? + explain

  • large particles
  • smaller surface area
  • fewer collisions
  • slower reaction
• what would happen if you used a small marble chip in your experiment?

  • much larger surface area
  • more collisions between the solid + particles in solution possible
• what is the equation for the rate of reaction?

  rate of reaction = change in concentration, volume or mass / time
• what happens if you increase the surface area?

  it increases the frequency of collisions