Dialysis Experiment
Kit #23
$162.15
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
- Includes digital resources
- Requires a water source
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.
- Comprehensive Teacher Guide with background information, detailed instruction, example data and answers
- Student Sheets with age appropriate background information, full procedure(s), and analysis items
- Materials necessary for the investigation (beyond common classroom items)
- Safety Data Sheets
Kit Components
- 30 Semi-permeable membrane
- 15 Chemplate and stir stick, clear
- 15 Pipette
- 15 Cup, plastic
- 3 lodine Solution, bottle
- 3 Dropper
- 2 Sodium Chloride Solution, bottle
- 2 Starch Suspension, bottle
- 1 Bottle of Deionized Water
- 1 Silver Nitrate Solution, bottle
- 1 Deionized Water, bottle
- 1 SDS (Safety Data Sheet) packet
- Downloadable pdfs of student and teacher literature