What is nucleation?

Nucleation is when something starts to grow from just a tiny seed.

Imagine you're making a snowball on a snowy day. At first, you have just one little piece of snow in your hand. That's like the seed. When you roll it on the ground, more snow sticks to it, and soon you have a big, fluffy snowball! That’s how nucleation works: a small starting point (nucleus) gets bigger and bigger as more material joins it.

Think about opening a bottle of soda. You see little bubbles forming and growing all over the inside of the glass. Those first tiny bubbles are like seeds, they start from one spot, and then more air or gas joins them, making the bubbles bigger. That's nucleation in action!

Nucleation is everywhere: in ice cubes, in clouds, even when you're baking cookies. Without it, things might not grow as nicely, just like how your snowball would stay tiny if you didn’t keep rolling it!