how do water molecules react when they get closer to each other? is the reaction different on other surfaces?

Question

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Answer 1

When water molecules get close to each other, they start to "stick" together due to the partial negative charge of the oxygen atom and the partial positive charge of the hydrogen atoms. This property of self-attraction of water is called cohesion. This attraction can turn into what is known as the self-ionization of water: 2 H2O → H3O+ + OH-

Answer 2

Water molecules don't react when they get closer to each other. Otherwise, there would be no water...