Instructions on How to Make a Polymer
Ball from Liquid Latex and Vinegar:
NOTE: This procedure should be done under a fume hood or in a well-ventilated area.
- Measure approximately 15 mL (1 tbsp) of liquid latex rubber into a marked plastic cup.*
- Pour 15 mL (1 tbsp) of water into the liquid rubber and stir to mix.
- Using a dropper, slowly add 15 mL (1 tbsp) of 5% acetic acid solution (household vinegar) to the
latex, while continuously stirring.
- When the mixture takes on the consistency of "rubber," remove it from the cup.
Hold it under running water and shape into a ball.
- Pat the ball dry and bounce it on the table top.
- Save for activities.
*Prior to use, the 15 mL mark can be determined by adding 15 mL of water,
(measured in a graduated cylinder) to the cup. The level can be marked, and the cup emptied
and dried.