You drop a spoon of white powder into some sour liquid and… whoooosh! Bubbles climb up like a tiny volcano!
Today you'll find out the real secret:
the fizz is a brand-new GAS being made right in front of you. 🫧
Tap Next to start exploring →
This trick needs two things. Tap each card to peek inside!
👆 Tap both cards to reveal their secret names.
An acid and a base are like two puzzle pieces that LOVE to react when they meet.
When acid meets base, they don't just mix — they react and swap pieces. This makes brand-new stuff, including an invisible gas called carbon dioxide (say: CAR-bon dye-OX-ide). 🫧
Acid + Base → Gas (+ a little water & salt)
So which gas makes the bubbles? Have a guess!
Tap the button to pour the vinegar onto the baking soda. Watch the gas bubble up!
Ready when you are!
Each bubble is a tiny bag of carbon dioxide gas. Gas is much lighter than liquid, so the bubbles float up and pop at the top — that's the fizzing sound you hear! 🔊
Quick check: Why does a gas bubble rise to the top of the liquid?
Fun fact: the same gas, carbon dioxide, is what makes fizzy drinks bubbly and helps bread and cakes puff up in the oven! 🍞
Drag each name into the right box. (You can also tap a label, then tap a box.)
3 labels to place.
Here's the whole secret in three steps:
Now you can explain a real science reaction to your family.
Great work, fizz scientist! ⭐