![]() (The term polymer comes from the words for “many parts.”) The borax acts as a “cross-linker,” linking the individual PVA chains to each other so they connect to form a blob of slime. While water is a liquid made up of individual H 2O molecules, polyvinyl alcohol is formed of long chains of connected molecules, making it a liquid polymer. Zip the bag and knead it until the chemicals are mixed into slime. Pour the cooled PVA solution into a ziplock bag and add 2 teaspoons (10ml) of the borax solution.Ĥ. Make a 4% borax solution by stirring a little less than 2 teaspoons (approx. You can add food coloring if you want colored slime. A slight film may have formed on top you can remove that with a spoon. Cover the bowl and microwave for 1 minute, then stir. 4g) of PVA into 1/2 cup (approx 100 ml) of water in a large microwave-safe bowl. Make a 4% solution of polyvinyl alcohol: Stir 1.5 teaspoons (approx. Graduated cylinder or measuring cups and spoonsġ.This is the real gooey deal! (This slime is non-toxic, but still keep these chemicals away from unsupervised children and wash your hands after playing with the slime.) What You Need: This slime is similar to the one above, but creates a less rubbery and more transparent slime. Store it in a plastic bag in the fridge, to keep it from growing mold. This kind of slime will get stiffer and more like putty the more you play with it. The borax links the polyvinyl acetate molecules to each other, creating one large, flexible polymer. The glue has an ingredient called polyvinyl acetate, which is a liquid polymer. (No one makes slime without getting a little messy!) Don’t worry about any leftover water in the bowl just pour it out. The slime will begin to form immediately stir as much as you can, then dig in and knead it with your hands until it gets less sticky. ![]() Add the glue mixture to the borax solution, stirring slowly.Ĥ. In the other bowl, mix 1 teaspoon borax with 1 cup water until the borax is dissolved.ģ. Add food coloring if you want colored slime.Ģ. In one bowl mix 1/2 cup (4 oz) glue and 1/2 cup water.
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