Hello ….Can youexplain anomolous expansion of water .

ANOMALOUS PROPERTY OF WATER :

        WATE HAS THE UNIQUE PROPERTY  OF ANOMALOUS EXPANSION . WHEN WATER IS COOLED FROM ROOM TEMPERATURE  IT FIRST CONTRACTS THE VOLUME AND BECOMES INCREASINGLY DENSE AS LIKE THE OTHER LIQUIDS , BUT AT 4 DEGREE CELCIUS WATER REACHES MAXIMUM  DENSITY, ON FURTHER COOLING WATER EXPANDS AND BECOME LESS  DENSER THIS WILL CONTINUE UNTIL IT REACHES 0 DEGREE  THE POINT AT WHICH IT FREEZES INTO ICE .