A Drink Gone WrongScience brain teasers require understanding of the physical or biological world and the laws that govern it.
John was drinking a bottle of Diet Coke, and he had a Mentos mint in his mouth. He accidentally back-washed and the mint went into the bottle. He screamed, dropped the bottle, and stepped back about ten feet.
Why did he do this?
HintThink about the category of this teaser, and remember that Coke is made up of water, carbon dioxide, preservatives, and sugar.
AnswerWhen he loses the Mentos into the soda, the gelatin and gum arabic from the dissolving candy breaks the surface tension. This disrupts the water mesh, so that it takes less work to expand and form new bubbles.
The reaction is physical, not chemical.
Basically, the ingredients in the mentos and soda are similar to the reaction of baking soda and vinegar, and causes an eruption.
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