What are the major parameters that depends on freezing and melting time of water- ice,
also the melting as well as freezing time of water- ice phase transition requires same time?
Please share your knowledge.
Dear Easwaran,
Consider first 'pure' substances, i.e., chemical compounds with a unique composition (e.g., single molecule). The physical properties of such substances would vary with environmental conditions such as pressure and temperature. For instance, water freezes at 0C (by definition, and for typical conditions: see below), but at an atmospheric pressure of 1 atmosphere (typically around 1013 mb).
The freezing and melting temperatures may not be the same, if the water is 'supercooled'. You may want to explore the following web site for more details:
http://physics.stackexchange.com/questions/60170/freezing-point-of-water-with-respect-to-pressure
Then, there are mixtures of substances. In general, the presence of contaminants (minute quantities) or mixtures have physical properties that depend on the relative proportions of the various constituents. Here again, you may want to read
https://en.wikipedia.org/wiki/Freezing-point_depression
as an introduction to this topic.
I hope this helps. Michel.
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