Cold Weather Fun: Boiling Water Turns to Ice Crystals In this
video, a mug of boiling water is tossed in the air on a very,
very cold day. Much of the water immediately freezes into ice.
This happens because it takes time for the energy contained in a
hot object to be transferred to a cold object. However, the rate
of heat transfer is proportional to the temperature difference
between the two objects, so hot water will lose heat faster than
cold water. MORE FROM LiveScience.com