Fifth-graders in Robin Conklin and Heather Walmer’s class at CES are finishing  science experiments about chemical reactions.

 

 

The lesson develops the idea that chemical reactions create new materials that have useful and interesting properties.

 

 

The great goo experiment has the students watch how glue and borax intermix to create a mystery goo. When borax and glue are mixed together, a chemical reaction occurs that creates this new slimy, gooey substance. That’s due to the cross-linking of polymer chains in the glue with the borax molecules. The result is a fun, stretch material!

 

 

Hands-on experiments are the best!