There’s a kids science experiment where you coat your hand in the right powder, dip it in water, and it comes out dry. I can’t find a link to it though.
Isn't the common definition of "wet" that it has water on it?
So, by that definition... 100% of water molecules would be "wet".
The first few paragraphs on wikipedia are a pretty good summary, and the article also includes a picture of a water bead failing to wet a surface:
https://en.wikipedia.org/wiki/Wetting
Wetting is the ability of a liquid to maintain contact with a solid surface ...
There’s a kids science experiment where you coat your hand in the right powder, dip it in water, and it comes out dry. I can’t find a link to it though.