Funny Putty


Your Challenge: Stretch your mind and learn chemistry by making Funny Putty!

What You Need

  • 1/4 cup white glue
  • 1 teaspoon household borax
  • 1 cup water
  • 8 oz paper cup
  • Wooden stirrer

Here's How

  1. Dissolve the borax in the cup of water.
  2. Pour the glue into the paper cup.
  3. Add 1/4 cup of the borax water to the glue, and stir really well.
  4. The glue turns into a blob! Pick it up with your hands, and start kneading it and stretching it.

Take It Further

Add food dye and glitter to create fun colors for your funny putty!

How It Works

The borax acts as a cross-linking agent or "connector" for the glue molecules. As the glue molecules become larger, after being linked, they become polymers. Thus, the solution begins to thicken and gel.

Fun Facts

  • Silly Putty was one of the most popular toys of the 20th century, after it was developed by accident.Samara
  • Astronauts in the Apollo 8 mission in 1968 brought silly putty with them to the moon.
  • In the 1950s, the Smithsonian Institution added Silly Putty to their exhibits.
  • Binney and Smith, the creators of Crayola, bought the rights to the Silly Putty brand in 1977.
  • Silly Putty was invented during World War II in New Haven, CT, when trying to find a solution to the rubber shortage.


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