Yes, at sea level, pure water freezes at 32°F (0°C). That’s the number every science class drills into your head. But here’s the kicker: water is a total drama queen.
If it’s pure—like, distilled, no minerals, no dust—it can drop way below freezing and stay liquid. This is called supercooling, and it’s why my water bottle was a sneaky traitor. It was still liquid at like 20°F, just waiting for a nudge.
Impurities Are the Party Crashers
Tap water? That’s got minerals, gases, and tiny particles galore. Those impurities act as nucleation sites—little platforms where ice crystals can start forming. So your tap water freezes closer to 32°F, while my super-pure science water plays games.
Salt, sugar, or alcohol? Oh, they throw the whole party off. Salt lowers the freezing point to below 0°F in extreme cases—that’s why we salt roads in winter. Fun side note: your fancy ice cream stays scoopable because of this trick.
