If the melting point of water didn't go down with pressure, ice skates wouldn't work. The reason ice is so slippery is that a film of water forms when you stand on it. Think about it: what other solid substance is as slippery as ice?
It's a common phenomenon for carbonated beverages to freeze when you open them. As any high school kid who hid a case of beer in the trunk of his car.
As stated before, water is about the only substance that expands when it freezes. That accounts for a number of odd characteristics in addition to the two I just mentioned. For example, the oceans would freeze from the bottom up if water contracted as it froze.
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Today's Featured Article - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
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