Dialysis Experiment Kit

SCIENTIFIC CONCEPTS / PROCESSES

• Observe diffusion of a solute through a semi-permeable membrane
  
• Remove an inorganic salt from a colloid
  
• Test for presence of chloride ions and starch with simple color tests
  
• Chemical and biological theories come to life in this natural continuation to the study of osmosis and diffusion (LA22). In this activity, students use a colloidal solution of starch and sodium chloride to vividly observe dialysis. They also observe diffusion of a solute through a semi-permeable membrane. Students then remove an inorganic salt from a colloid and test for the presence of chloride ions and starch with simple color tests.

Contents List

• 1 Teachers Guide with MSDS
  
• 30 Student Worksheets and Guides
  
• 12 Chemplates ®
  
• 30 Containers, plastic
  
• 3 Droppers
  
• 30 Dialysis membranes

• 3 Iodine solution
  
• 2 Sodium chloride
  
• 2 Starch suspension

• 1 Deionized water
  
• 1 Silver nitrate