Question

Why pure water has maximum density at 4 degree celsius

Answer 1

Answer:

because it is the triple point of water is the only temperature at which water can exist in all three states of matter; solid (ice), liquid (water), and gas (water vapour). This temperature is 0.01°C and 4 degree is when it is ranging between❗ solid and liquid

Answer 2

Water is one of the few exceptions to this behavior. When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees Celsius is reached. After that, it expands slightly until it reaches the freezing point, and then when it freezes it expands by approximately 9%.

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