Short answer: Both solid ice and liquid water.
Long answer: Once liquid water drops to 0 degrees Celsius, it is still liquid water. More heat energy has to be removed to transit water to a solid. This energy is called the "latent heat of fusion." That's why we often say water melts at 0 degrees Celsius (32 F) and water freezes at 0 degrees Celsius, because both are true.
333.55 kJ per kg are required to convert ice to liquid or vice-versa.
Water freezes at 0 degree Celsius
Frozen.
Ice
It is not.
yes
At O oC water freezes and becomes ice. So, it is in solid state.
Water at 0 oC is ice.
boil it at 100 degree Celsius or freeze it at 0 degree Celsius
Water turns into a solid when it freezes. It does this at 32 degrees Fahrenheit and 0 degree Celsius.
It just remains as water. The freezing point of water is 0 degrees Celsius, while the freezing point is 100 degrees Celsius. Therefore at 20 degrees Celsius, there is no change in state and it just remains as water.
0 degree Celsius.
0 degrees