Now, here's where things get really interesting. Water can actually be supercooled, meaning it can be cooled below its freezing point without actually freezing. This is because the water molecules need a little kick to start forming ice crystals. It's like they're waiting for permission to freeze!
But, if you disturb the water, like by adding a tiny ice crystal or even just bumping the container, the water will rapidly freeze. It's like the water molecules are just waiting for an excuse to get this party started! This phenomenon is called flash freezing, and it's pretty amazing to watch.
At What Temperature Does Moving Water Freeze | Gas Furnace