A pure substance is one that consists of a single type of particle, with all constituent particles being identical in their chemical nature. It lacks any mixture or variation in its composition.
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In science, “pure” refers to a substance composed entirely of particles with the same chemical nature. It indicates a homogeneous composition without any adulteration or mixture of different substances.
During evaporation, water molecules absorb heat energy from the surroundings, increasing their kinetic energy. As they gain enough energy, they break free from the liquid phase and enter the gaseous phase as vapor.
Wet clothes dry up through the process of evaporation, where water molecules on the fabric’s surface gain sufficient energy to escape into the air as vapor, removing moisture from the clothes.
When water is left uncovered, molecules at the surface continuously gain energy from the surroundings, gradually reaching the threshold for evaporation.