Slime is a type of polymer. Polymers are certain materials that have atoms that are bonded together in a link pattern. Atoms are the tiny building blocks of all elements. When atoms bond together, like in polymers, they form molecules! The atoms in polymers have chains of atoms that help make polymers flexible, moldable, and strong. They are flexible because the chains of atoms can be twisted or turned in many different shapes, sometimes even when the object is a solid! The glue’s polymers are linked together by the cross-linking agent, usually borax. The polymers make slime a non-Newtonian fluid, which means that slime can be a solid when squeezed and a liquid when you let the slime flow!!