Tuesday, May 18, 2010

Mini Blog Project #3

Photo Credit: Chantel Yip

Today, I did an experiment that involved a toothpick in a balloon without the balloon popping!
To do this you need:
  • A sharp toothpick
  • A balloon
  • Petroleum jelly
To put the toothpick into the balloon without popping, you simply rub the petroleum jelly on top of the balloon with the slightly darker color of the balloon, which has rubber, and you stick the toothpick in the balloon from there. You have to make sure to be careful though because you want to be patient and just gently twist it in.

Science: The petroleum jelly is a lubricant and with the latex rubber of the balloon, it has a long hydrocarbon chain and a long polymer chain respectively. Since rubber has a long polymer chain, it is able to hold its shape with the petroleum jelly.

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