Why Does Water Evaporate At Room Temperature? - Science ABC

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Water evaporates at room temperature because the molecules at the surface of the liquid have weaker attraction than those in the bulk. When the surface is exposed to sunlight, some molecules gain enough energy to escape into the atmosphere. The level of humidity in the air also plays a role in the process of evaporation.

In school, we were taught that water changes from liquid to vapor when it boils, which requires a high temperature called the boiling point. For water, this point is 100°C.

But we have all seen that puddles evaporate when the skies clear after rain, even when the temperature is not near 100°C. This is because water can also change from liquid to vapor during evaporation, which happens at much lower temperatures.

The reason for this lies in the physical and chemical properties of water molecules and the bonds they form with each other, known as intermolecular bonds.

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Why Does Water Evaporate at Room Temperature?

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