EVERYDAY SCIENCE

Detailed explanation-1: -Fresh water freezes at 32 degrees Fahrenheit but seawater freezes at about 28.4 degrees Fahrenheit, because of the salt in it. When seawater freezes, however, the ice contains very little salt because only the water part freezes.

Detailed explanation-2: -The scientific team found that dust-free water on a smooth, clean surface will drop well below 32 Fahrenheit (zero Celsius) before it freezes. In this state, the water is called “supercooled.” But once one crystal does form, the supercooled water will freeze rock-solid in an instant.

Detailed explanation-3: -Generally speaking, water in an ice tray will start freezing after an hour of exposure to at least 32 degrees Fahrenheit. After three or four hours, the water should be completely frozen.

Detailed explanation-4: -Pure water transitions between the solid and liquid states at 32°F (0°C) at sea level.

Detailed explanation-5: -Seawater contains the high amount of impurities than tap water and freezing point of a substance(water) increases when impurities in the substance increases. Hence seawater has a lower freezing point of-2 or-4 degrees Celcius and therefore sea water does not get freeze easily.