Friday, 27 September 2013

Diffusion and Dilution

Diffusion:
  • The net movement of particles in a fluid state from an area of high to low concentration.
  • Diffusion is faster in gases than liquids – more free spaces between gas molecules.

Dilution
  • Dilution involves reducing the concentration of a substance in a solution.
  • Adding more potassium manganate crystals to water makes the colour appear darker.