How to make Slime.

Essay by lildraganon April 2004

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Borax (from the supermarket or a small box from laundromat)

Elmer's Glue-All (White only)

Food Coloring (optional)


One large plastic jar w/screw lid - ala a large peanut butter jar

One plain old cup


Step "1"

Add together;

1/3 cup Elmer's Glue

1/3 cup Water

Food coloring

Shake, stir or mix these ingredients until glue dissolves in water.

Step "2"

Fill an empty cup with 1/3 cup of water

Slowly pour in 2 tablespoons of borax, allow to settle for a minute

Pour off excess water and discard the water

Step "3"

Scrape the wet borax "B" into the jar with mix "A", close lid

Shake like crazy.... oh yeah, shake the jar too

Shake until the slosh, slosh becomes thump, thump

Open and remove the guk, you can scrap extra from the sides

Now play! It may stain things, could get stuck in carpets, who knows?

The Science:

Elmer's glue is copolymer polyvinylalcohol, PVA, a plastic made from oil

Borax is a natural mineral mined from the earth made of boron, sodium, oxygen and water.

When you add water to elmer's glue the PVA, being unstable, starts to dissolve in the water.

When you add the wet borax, it is slightly acidic, and it reacts with the PVA to crosslink.

This crosslinking causes the guk to undergo an irreversible gelation reaction much like when an egg boils to become a hard boiled egg. It is safe to handle, but hey! let's not eat it...OK?