Edvotek™ What is Osmosis?

Introduction to the principles of osmosis.

Supplier:  Edvotek™ S74

Catalog No. S94601

Includes: Complete instructions, background information and study questions; Low molecular weight dye (orange dye); High molecular weight dye (violet dye); Roll of dialysis tubing (7 ft.); Five transfer pipets

Description

• Activities will be performed utilizing dialysis tubing and various concentrations of salt
• Dyes of different molecular weights will also be used to visually demonstrate the size selectivity of membranes
• For 5 lab groups

Students will learn the following concepts:

• Diffusion of small molecules across cell membranes is important for transferring nutrients to cells and removal of certain metabolic waste products
• Dialysis across a semi-permeable membrane can retain certain molecules and allow others to diffuse based on respective signs
• Water molecules move from low salt to high salt concentrations when separated by dialysis tubing

 

Order Info

Class size: five groups.

Specifications

• Product Type: What Is Osmosis Kit
• Includes: Complete instructions, background information and study questions, high (violet dye) and low (orange dye) molecular weight dyes, dialysis tubing (7 ft.), five transfer pipets
• Time Range: 45 min.
• Class Size: 5 Lab Groups

• For Use With (Application): Students will be introduced to the principles of osmosis
• Requires: 300 to 400mL beakers, table salt, apple and beet juice, distilled water
• Content And Storage: Room temperature