Tuesday, July 23, 2013

Lab 3: Diffusion and Osmosis


  • Charcoal solution and wet mount slide preparation
  • Liquid in a solid - agar, IKI, Methylene Blue
  • Gas in a Gas - perfume
  • Role of membranes: Thistle Tube demo
  • Role of membranes: Elodea and saline solution
  • Dialysis tubing, scales, hot and cold water baths


  • Observe Brownian movement
  • Observed diffusion of chemicals in different states (gas, liquid, solid)
  • Observe the role atomic weight plays on the rate of diffusion
  • Examine the role of membranes in diffusion and osmosis
  • Assess the role of temperature on the rate of diffusion

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