• Are two atoms of the same element identical?
• Can water stay liquid below zero degrees Celsius?
• How can glass be a liquid if it's so hard?
• How do I know if something is an acid so I can avoid eating it?

Dear student 

Ans Q2 :

0°C is known to be the freezing point of water. But, actually at 0°C, water remains in its liquid state. It can occur in solid as well as liquid states also at this temperature . But, the next thing , which comes into picture to answer this is the atmospheric pressure and the latent heat of fusion.When we apply pressure to a liquid, we force the molecules to get closer together. They can therefore form stable bonds and become a solid even if they have a higher temperature than the freezing point at standard pressure.