– What makes the water disappear when you spill it in the floor (non porous surface)

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– What makes the water disappear when you spill it in the floor (non porous surface)

In: Chemistry

Not entirely sure but water is a kind of wobbly grid of water molecules that are attached to each other, but not too strongly. If some force influences it, for example light from the sun hits it or wind moves it, some of those molecules get detached from the rest and fly off into the air. After a while it happens to all of them. The hotter it is the more they also wobble themselves, which increases the probability that they will fly off.

Additionally to the good explanation already given: in your spilled water the water molecules don’t have all the same temperature. There are some that move faster, others slower. The very fast ones are hot, the other colder. Some of them are warm enough to evaporate, while most of them are too cold to do that. As the hot ones leave, the spilled water cools down ever so slightly, and the warm air around heats the spilled water up again till they have the same temperature. This causes some to molecules to gain again enough speed to evaporate. So the air keeps on warming up, the water keeps on evaporating. This circle goes on until all water is evaporated. Wind just accelerates the process as it drags the hot water away from the spilled water much faster.