GENERAL KNOWLEDGE

Detailed explanation-1: -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%.

Detailed explanation-2: -When frozen, water molecules take a more defined shape and arrange themselves in six-sided crystalline structures. The crystalline arrangement is less dense than that of the molecules in liquid form which makes the ice less dense than the liquid water. When water freezes, the volume expands by approximately 9%.

Detailed explanation-3: -Hence the water starts converting into ice. This phenomenon is called freezing. Hence it is true that to freeze water, energy is removed from it. When the energy is removed from steam which is a gas state of water, it starts changing into the liquid form because of the decrease in the temperature of the molecules.

Detailed explanation-4: -Even though the volume of water changes as it becomes ice, the mass of the water should remain the same before and after it turns into ice.