Physics Van 3-site Navigational Menu

Physics Van Navigational Menu

Q & A: freezing really pure water

Learn more physics!

Most recent answer: 04/20/2015
Can water freeze if there is absolutely no impuritiesEx. (dirt, minerals, bacteria)
- Manny (age 17)
beaver, pa, beaver

Nice question. You're wondering whether the water can stay supercooled, as we discuss here: Very pure water can stay well below 0°C for a long time without freezing, especially if it's in a little isolated drop so there's no container to help start the freezing. Below about -37°C, however, it will rapidly freeze without any help. ( That's called the temperature of homogeneous nucleation.

Mike W.

(published on 04/20/2015)

Follow-up on this answer.