08 Jan '21 08:15>2 edits
As this video explains;
The discovered two states of liquid water are temperature dependent.
As you heat up the water;
At around 40C its refractive index starts to change.
Then, if it is completely pure water, its electric conductivity starts to change at around 55C.
Then at around 57C its surface tension starts to change.
Then at around 64C its thermal conductivity starts to change.
All this suggests the water gradually changes from one state to another between about 40C and roughly 70C.
This video doesn't give any explanation of what is going on at the molecular level during this transition, which I find disappointing, but the reason why it doesn't could be, for all I know, simply because nobody yet knows.
YouTube
The discovered two states of liquid water are temperature dependent.
As you heat up the water;
At around 40C its refractive index starts to change.
Then, if it is completely pure water, its electric conductivity starts to change at around 55C.
Then at around 57C its surface tension starts to change.
Then at around 64C its thermal conductivity starts to change.
All this suggests the water gradually changes from one state to another between about 40C and roughly 70C.
This video doesn't give any explanation of what is going on at the molecular level during this transition, which I find disappointing, but the reason why it doesn't could be, for all I know, simply because nobody yet knows.
YouTube