To demonstrate properties of polymers and to use the properties of a substance to determine which state of matter it characterizes. Polymers are a group of chemicals that are found in many forms in the world around us, including plastics, glue, and the biochemical molecules that make up our bodies. The Elmer's School Glue is a solution containing long polymer chains. Because these chains are long, they interfere with the movement of each other, causing this solution to be rather thick and to pour more slowly than water. This means the solution is more viscous than water.
Viscosity is a physical property of a liquid that describes how well it flows.
The cross-linker bonds different polymer chains together. The Putter Putty becomes more viscous than the beginning glue, making it very gooey, bouncy and strange. Elmer's School Glue into Ziploc bag. Zip bag and knead thoroughly. Carefully remove Putter Putty and knead another minute or so.