Worm Goo, sodium alginate, is a long chain of molecules which is called a polymer. When it comes in contact with the Worm Activator solution, the calcium ions in the solution instantly link together the long alginate chains. This creates a solid polymer strand, or a goo worm, because the cross-linked polymer is insoluble in the solution.
Test it for yourself and make some goo worms!
We use Steve Spangler's Insta-Worms, which can be purchased here: https://www.stevespanglerscience.com/store/insta-worms-1042.html
For instructions, use this printable PDF instructions to do the experiment!
More test ideas: make skinny worms, make a worm egg, leave the worms in the solution for a longer time, leave a worm out to dry for several days, or experiment with food coloring!
Share your results on our Facebook page!
Also, be sure to tune in to ABC11 Science Club with BASF every Wednesday at 4:28 PM!