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Ward's® Chemistry Polymer Worms Demonstration

WARD470013-626 WARD470013-622
A Fun Real-Life Application for Cross-linking and Polymer Chemistry

  • Two kit options available: teacher demonstration or student activity
  • Required basic labware that you provide.
This activity demonstrates how a simple material extracted from seaweed is used as a common thickening agent for popular candies. Sodium alginate is a long-chain, natural polysaccharide polymer that contains sodium ions. When placed in a solution of calcium chloride, the divalent calcium ions displace the sodium ions and the polymers are quickly cross-linked to form a worm-shaped gel. These gelatinous worms can be safely examined since the polymer is a nontoxic food additive. The demonstration includes enough materials to for 10 repetitions. The activity contains enough materials for 12 student groups to prepare several worms.

Ordering information: Includes Sodium Alginate, Calcium Chloride, Food Coloring, and Syringe. General Glassware/Labware are required but not included.



   
 

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Item # Description Includes No. of Lab Groups No. of Uses Unit Availability Price Quantity
470013-622 Ward's® Chemistry Polymer Worms Demonstration
Instructions 12 - Each Retrieving Restricted
470013-626 Ward's® Chemistry Polymer Worms Activity
Teacher's Guide and Student Copymaster 12 Each Retrieving Restricted
restricted This product is marked as restricted and can only be purchased by approved Shipping Accounts. To apply for a shipping account number, click here. If you need further assistance, call Customer Service at 800-387-9393 or email borealcs@vwr.com.

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