Anomalous expansion of water.

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Christopher Ulloa

in a natural environment the solid wáter is more expand than liquid wáter, so when is melting the wáter is contracting

Antonin Chapoy

Check the following website for some very clear explanation: http://www1.lsbu.ac.uk/water/density_anomalies.html#melt

Mahendra Verma

Please look the websites:

http://www1.lsbu.ac.uk/water/martin_chaplin.html;

http://www.iapws.org/

http://www.ineelgeosteam.net/WtrStmTbl/#/home

The liquid (water) contracts from 0 to 4°C and then expands at 1 bar (atmospheric conditions). There is liquid-liquid phase transition at 4°C. The websites may provide all the information related to your queries.