You know how you can skate on ice? That’s because the pressure from your blade actually lowers the freezing point temporarily, creating a thin layer of liquid water for you to glide on. Wild, right? But for normal everyday life, atmospheric pressure doesn’t change enough to matter to your ice cube tray.
Unless you’re climbing Mount Everest. At high altitudes, the air pressure is lower, so water boils at a lower temperature (damn you, my pasta date!), but freezing? It actually happens at a slightly higher temperature than 0°C. Don’t worry—by less than a degree—but it’s a fun fact to drop at your next fancy dinner party.
At What Temperature Does Moving Water Freeze | Gas Furnace
The Distilled Water Trap
Here’s a weird one: you can put super-pure distilled water in a perfectly clean glass, stick it in the freezer, and it might stay liquid for hours. It’s so pure, there’s no dust or scratch for ice crystals to form on. It’s called supercooling, and it feels like magic.
Then, the moment you tap the glass—boom—it instantly turns into a slushy mess. This is why your fancy bottled water sometimes freezes solid the second you open it after shaking it in the car. It’s like water has a dramatic personality.
