When water is left uncovered, molecules at the surface continuously gain energy from the surroundings, gradually reaching the threshold for evaporation.
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When water is left uncovered, molecules at the surface continuously gain energy from the surroundings, gradually reaching the threshold for evaporation.
Water left uncovered slowly changes into vapor due to evaporation. Molecules at the surface gain enough energy from the surroundings to break free from the liquid phase and enter the gaseous phase.