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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.



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
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