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The anomalous expansion of water refers to its unusual property of expanding when cooled below 4°C and reaching its maximum density at 4°C. This behavior is contrary to most substances, which contract and become denser as they cool below their freezing point.
8 gru 2015 · The origin of the anomalous properties of water is the increase in structural fluctuations, as water is cooled down and approaches the Widom line, leading to fluctuations into tetrahedral...
Notable amongst the anomalies of water is the opposite properties of hot and cold water, b with the anomalous behavior more accentuated at low temperatures where the properties of supercooled water often diverge from those of hexagonal ice.
Explanation of the physical anomalies of water including explanation of surface tension, the Jones-Ray effect, sea foam, viscosity and self-diffusion
When matter is heated, it expands (and becomes less dense) and when cooled, it contracts ( making it more dense). Water behaves quite differently. This is called Anomalous or abnormal behaviour . How? Anomalous expansion of water is an abnormal property of water.
This exceptional behaviour of water in respect of expansion within the range of 0°C to 4°C, is called anomalous expansion of water. The two graphs below represent the change in volume and density of 1 g of water, with the increase in temperature [Fig.]
Explanation for Anomalous behaviour of water. At 4°C, water has Maximum density. Normally, liquids contract on cooling & the density increases. However, water is special. It contracts when cooled, down to a temperature of 4°C (normal behaviour).Water attains its maximum density at 4°C .
