About water in other planets

So think about, from Earth was discover water in other planets, but the sciences say that the water and all the other substances no matter in what planet follow the same laws so if in Earth the water is only liquid at the temperature bigger that 0^oC and less than 100^oC at normal pressure so what from Earth looks like water isn’t water, the Earth after the Mercury and Venus is the hotter planet, so if you see water on another planet of the solar system you saw another thing like liquid oxygen, of liquid hydrogen that are in Earth gas, maybe you could be seeing an acid that in Earth would be vapour, probably the water would be ice rocks, if the planet is cooler than our the water isn’t liquid, and in other planets that are hotter than our the water is vapour so you would not see water the water would be in the atmosphere. Rute Bezerra de Menezes Gondim