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Mentos + Diet Coke Geyser
Launch a soda geyser 20 feet in the air!
💥 Explosions
⭐⭐⭐Getting Tricky!
🛒 Supply List
Check off supplies as you gather them!
📋 Step-by-Step
Step 1: Go Outside!
This experiment is MEGA messy. Find an open outdoor area — a driveway, backyard, or park. NOT inside the house! 🏠❌
Step 2: Set Up the Bottle
Step 3: Load the Mentos
Step 4: Drop & RUN! 🏃
Step 5: 🚀 GEYSER TIME!
🔬 Why It Booms!
This is all about nucleation! Each Mentos candy has thousands of tiny bumps on its surface. When they hit the soda, each bump creates a spot where CO₂ bubbles can form. Millions of bubbles form all at once, and they all rush to escape — WHOOOOSH! Diet Coke works best because it has no sugar to slow down the reaction.
⚠️ Safety Tips
- 🛡️ALWAYS do this outside
- 🛡️Stand back at least 6 feet after dropping the Mentos
- 🛡️Don't lean over the bottle — the geyser shoots UP
- 🛡️Wear clothes you don't mind getting sticky
🤯 Fun Facts
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The world record Mentos + Diet Coke geyser reached over 29 feet!
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Scientists actually study nucleation — it's how raindrops form in clouds!
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Mythbusters proved this experiment works better with Diet Coke than regular Coke!