It’s not a chemical reaction — it’s physical nucleation . The surface of a Mentos candy is covered in microscopic pits (about 10,000 per candy). Those pits trap tiny air bubbles. When you drop Mentos into carbonated soda, the dissolved CO₂ rushes into those pits, rapidly forming huge bubbles all at once. The soda becomes a foam rocket.

Instant karma. Also, the teacher’s face.

It’s pure chaos with a sugary soundtrack.

Never seal sublimating substances. Gas needs space. So do your eyebrows. 3. The Mentos-Diet Coke Geyser: Why It Works (and Why It’s Not Just a Prank) What happened: Thousands of YouTube videos of soda fountains erupting 20 feet high. Kids laughing. Dads getting soaked.

So, in the spirit of learning through laughter, here are three real “sience” moments that actually taught us something valuable. What happened: A middle schooler put a marshmallow in a vacuum chamber. As the air was removed, the marshmallow grew to four times its size. Then, with a dramatic pop , it collapsed into a sticky, sad mess.

Marshmallows are full of tiny air bubbles trapped in a gelatin-sugar matrix. Lower the surrounding air pressure (like in a vacuum), and the air inside the marshmallow expands rapidly. When you let the air back in, the pressure crushes the now-weak walls. This is Boyle’s Law in action: volume of a gas increases as pressure decreases (at constant temperature).

Now go forth, spell “science” correctly (s-c-i-e-n-c-e), and keep laughing. It’s how you learn. 😄 Got a “sience lesson lol” of your own? Spill the beaker — and the story — in the comments.