Slime is a fun material that you can make yourself using common household ingredients. The ingredients start out as liquids, but when you mix them together chemical bonds form between the molecules in the slime, forming a substance known as a polymer. You encounter polymers every day. Examples of common polymers include the cellulose in paper and trees, keratin in hair and nails, and all types of plastics.


Equipment and Ingredients:

  • 1/2 teaspoon Borax
  • Warm Water
  • 2 x mixing bowls
  • 1 x 150 ml bottle of clear school glue
  • Measuring cups and spoons
  • Lab coat or apron
  • Goggles


  • Always have an adult with you to help you during your experiment.
  • Always wear eye protection and gloves when doing chemistry experiments


  1. Pour the glue into a bowl.
  2. Add 150 ml water and stir it into the glue.
  3. If desired, add food coloring. Otherwise, the slime will be an opaque white.
  4. In a separate bowl, mix one cup (200 mL) of water and 1/2 teaspoon of borax powder. Stir it until all borax powder is dissolved in water.
  5. Slowly add the glue mixture by stirring into the bowl of borax solution.
  6. Place the slime that forms into your hands and knead until it feels dry. (Don’t worry about the excess water remaining in the bowl.)
  7. The more the slime is played with, the firmer and less sticky it will become.
  8. Place your slime in a zip-lock bag in the fridge otherwise it will develop mold.

Additional Materials about Slime:

Back to Polymers