Naked Science Forum

Non Life Sciences => Chemistry => Topic started by: petrovitch on 02/09/2008 17:47:30

Title: Why can cold water suddenly freeze?
Post by: petrovitch on 02/09/2008 17:47:30

Kenn E. Thompson asked the Naked Scientists:

I freeze bottled water daily.  Frequently, several bottles remain in a liquid state, but snap freeze once I touch them.  How can water remain in a liquid state at temperatures below 32 degrees Fahrenheit?  By the way, this is really cool to witness.  The bottles freeze from top to bottom in about two seconds, layer by layer.

What do you think?

Title: Why can cold water suddenly freeze?
Post by: lyner on 04/09/2008 09:27:43

Have a look at this thread:
http://www.thenakedscientists.com/forum/index.php?topic=16516.0 (http://www.thenakedscientists.com/forum/index.php?topic=16516.0)
I think it deals with your question.

Title: Why can cold water suddenly freeze?
Post by: lightarrow on 04/09/2008 19:48:20

What I don't catch is the fact petrovitch is the same who asked the question in the other thread.

Title: Why can cold water suddenly freeze?
Post by: lyner on 04/09/2008 22:54:20

We obviously didn't come up with a satisfactory answer last time.
Well spotted!

Title: Why can cold water suddenly freeze?
Post by: paul.fr on 05/09/2008 00:44:28

Perhaps this question was sent in to the show and due to a possible delay in the "system" generating the question on the forum, the poster decided to register and ask the question here himself.

Title: Why can cold water suddenly freeze?
Post by: lightarrow on 05/09/2008 10:24:29

Quote from: Paul. on 05/09/2008 00:44:28

Perhaps this question was sent in to the show and due to a possible delay in the "system" generating the question on the forum, the poster decided to register and ask the question here himself.

Ah, ok, that's more clear now.