Elmer's glue has water in it plus a much longer, more flexible chemical compound called polyvinyl acetate. These long flexible molecules are moving around in the water like intertwined strands of ...

As the polymers dry, the liquid evaporates and the solid, sticky adhesive stays behind. Other glues help things stick because of a chemical reaction. Silicone and cyanoacrylate glues, like Krazy Glue ...