{"id":59793,"date":"2026-02-01T05:24:08","date_gmt":"2026-01-31T20:24:08","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=59793"},"modified":"2026-02-01T05:24:08","modified_gmt":"2026-01-31T20:24:08","slug":"frozen-in-a-flash-why-water-instantly-turns-to-ice-with-a-tiny-shock-the-secret-of-supercooling","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=59793&lang=en","title":{"rendered":"Frozen in a Flash! Why Water Instantly Turns to Ice with a Tiny Shock \u2014 The Secret of Supercooling"},"content":{"rendered":"

I am Ken Kuwako, your Science Trainer. Every day is an experiment!<\/strong><\/span><\/p>\n

“What if the liquid in front of you froze instantly, like magic?”<\/p>\n

Have you ever witnessed such a breathtaking sight? Transparent water transforming into crystals at the touch of a finger, as if time itself had stopped. In our science club, we took on the challenge of recreating this dramatic phenomenon known as supercooling.<\/p>\n

Water is a mysterious substance that can remain liquid even when the temperature drops well below -10 degrees Celsius. The moment it snaps into ice with just a tiny nudge is so dramatic it gives me goosebumps every time. After much trial and error, we discovered a “secret recipe” using something you can find at any convenience store: sparkling water. I want you to experience the thrill of a successful experiment, so I\u2019m sharing all the know-how right here!<\/p>\n

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Preparing for the Instant Freeze: The Science Club Method<\/h3>\n

The keys to successful supercooling are strict temperature control and total “serenity.” First, set up your experimental environment following these steps:<\/p>\n

Put ice in a bag, crush it into small pieces, and spread it inside a highly insulated styrofoam box.<\/p>\n

Add plenty of salt and a small amount of water to the ice, then stir. Salt lowers the melting point of ice, which allows the temperature of the mixture to drop to about -15 degrees Celsius (this is called freezing-point depression).<\/p>\n

Gently place a bottle of sparkling water into the icy slush, being careful not to shake it.<\/p>\n

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Now, leave it perfectly still for exactly 25 minutes. (If you wait 30 minutes, it usually starts freezing on its own, so 25 minutes is the golden ratio!) This “waiting time” is the crucial step where the water molecules lose their chance to freeze and continue to chill while remaining liquid. Once the time is up, take the bottle out very slowly\u2014as if you’re holding your breath\u2014and twist the cap. Then…?<\/p>\n