Essentially, a polymer is a chain of molecules. Most liquids are composed of small molecules that move around and bump into one another. When the liquids are by themselves, they are called monomers. However, when these molecules combine together in a chemical reaction, they form chains called polymers.*
Gak can slowly flow like a liquid, but it also can bounce like a solid. Materials with such behavior are called non-Newtonian fluids.
150 mL beaker
1. Mixture A – Glue Solution
Add 25 mL of glue (to the 100 mL beaker)
Measure 20 mL of water (in a beaker)
Add water to glue
Add a few drops of food coloring
2. Mixture B – 25% Borax Solution
Measure 15 mL of the 25% borax solution
This is made with 60mL water for 1 Tablespoon borax power.
(Note: mix well before measuring)
3. Making the Gak
Add the 15 mL of borax solution (mixture B) to the glue solution (mixture A)
Mix well – The mixture will be slimy at first but will thicken quickly as the polymers form. Keep stirring until mixture holds together like putty.
Take out of cup & have fun.