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Dialysis Experiment

Kit #23
Dialysis Experiment
Chemical and biological theories come to life in this natural continuation to the study of osmosis and diffusion (Lab-Aids Kit No. 22). 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. Individualized worksheets guide students through the step-by-step procedure in this self-directed lab activity.

Details at a Glance

  • 1 Day | 1 ~50 minute class period
  • 1 Activity
  • Accommodates 1 class, with 12 groups of 2 students
  • Consumables service 24 students
  • Meets our criteria for supporting literacy
  • Requires a water source

Complete Kit Equipment Package

Dialysis Experiment

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Scientific Concepts

  • 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

Guides & Student Sheets

Our kits and modules provide you with everything you need so you can open, review, and teach the material confidently the next day.

  • Full downloadable Teacher Guide with background information, detailed instruction, example data and answers
  • Downloadable Student Sheets with age appropriate background information, full procedure(s), and analysis questions
  • All materials necessary to carry out the investigation
  • Safety Data Sheets

Kit Components

  • 30 Dialysis membranes
  • 30 Plastic containers
  • 12 Chemplates®
  • 3 Bottles of Iodine Solution
  • 3 Droppers
  • 2 Bottles of Starch Suspension
  • 2 Bottles of Sodium Chloride solution
  • 1 Bottle of Silver Nitrate solution
  • 1 Bottle of Deionized Water
  • 30 Student Worksheets and Guides
  • 1 Teacher’s Guide with MSDS

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