Weird Science: soda eruption experiment

Weird Science: soda eruption experiment

WAIANAE (HawaiiNewsNow) - In today's Weird Science experiment, Dr. V shows us how to create a fun and tasty explosion using diet soda and mint Mentos.

Dr. V Show: Soda Eruption Experiment

Things you need:

  • A pack of Mint Mentos
  • 2 liter bottle of  soda (diet soda works best)
  • A small tube with slightly larger diameter than the Mentos
  • Popsicle stick

The Experiment:

Open the soda bottle and place the tube on top with the popsicle stick directly on the mouth of the bottle to keep the Mentos in the tube. Put the Mentos in the tube so that when the popsicle stick is quickly removed, all the Mentos will fall in the soda bottle. Then stand back and watch the eruption! The more Mentos into the soda bottle, the more fun!

So that's how it works…

Soda is a carbonated beverage consisting of refined sugar (or sugar substitute for Diet), purified water, flavor syrup, and carbon dioxide. Carbonation creates the tingly feeling in your mouth, giving soft drinks a refreshing taste and fizzy effect when your pour the soda.  When you open the bottle slowly, the water resists the expansion of carbon dioxide bubbles in the soda. The bubbles need something to start on, but the inside of the soda bottle is very smooth, so there is no place for the bubbles to form.

What happens when you put Mentos in to the bottle? Each Mentos candy has thousands of tiny pores all over its surface. These tiny pores function as nucleation sites for carbon dioxide bubbles to form. As soon as the Mentos enter the soda, bubbles form all over their surface. They quickly sink to the bottom, causing carbon dioxide to be released by the carbonated liquid with which they come into contact along the way, greatly increasing its volume. And thus the eruption!

What happens if…

You use fruit flavored Mentos? Or another type of candy?

You use different types of soda?

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