More About Polymers

Most things around us are called a solid, liquid, gas, or even plasma. When things exhibit properties of more than one of these they are called polymers. They exist in a kind of in-between state. You can help children see this by creating a polymer using liquid starch, white glue, and water. Call it gak, goop, or slime, they will learn an important science lesson about the states of matter.


1 part water
1 part white craft glue (like Elmer’s glue)
1 part liquid starch (used for clothes)
Food coloring (optional)
Mixing bowl
Mixing spoon

Pour the glue into the mixing bowl.
Add the water to the mixing bowl with the glue.
Stir the glue and water together.
Add and stir in about 6 drops of food coloring.
Now add the liquid starch and stir it in.
It should be nice and gooey by now. It becomes stretchy and easier to hold as it is kneaded.
Store it in a zip bag when you are not using it.


Glue is already a polymer. The tiny molecules in the glue are in strands like a chain. When liquid starch is added, the strands of the polymer glue hold together, giving it its slimy feel. The new form can be drizzled, stretched or broken.