Eli5, why does the last bit of water always stick to any non-porous surface?

Question

You have to wipe the last bit of water off pretty much everything, how does the last bit of water stick to most surfaces?

In: Chemistry

Answer 1

Water molecules are one large oxygen atom and two tiny hydrogen atoms. They’re stuck together like a Non-public-domain Mickey Mouse head, with both hydrogen atoms on one end and the big oxygen on the other.

The oxygen atom pulls all the electrons towards itself, making Mickey’s chin negatively charged and his ears positively charged.

So now they’re all tiny little molecular magnets, and they stick to all sorts of things. Surfaces. Eachother. Salt ions. This property makes water a very “sticky” molecule and a powerful solvent.