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During evaporation, particles in a liquid become less ordered and more spread out as they turn into a gas.
In a liquid state, particles are closely packed together but can move freely around each other. This close arrangement allows liquids to have a definite volume but not a definite shape. They take the shape of the container they are in. The particles in a liquid are constantly moving and colliding with each other, and this movement is what gives a liquid its ability to flow.
However, during evaporation, the particles at the surface of the liquid gain enough energy to overcome the forces of attraction between them. This allows them to escape from the liquid and become a gas. As a gas, the particles are much more spread out and move in all directions. They have neither a definite shape nor a definite volume and will expand to fill any container they are in.
The process of evaporation is a cooling process. As the most energetic particles escape from the liquid, the average energy of the remaining particles decreases, which lowers the temperature of the liquid. This is why we feel cooler when sweat evaporates from our skin.
In summary, the main difference in particle arrangement between a liquid and a gas during evaporation is the distance between the particles. In a liquid, the particles are close together and can move around each other, while in a gas, the particles are far apart and move freely in all directions. This change in particle arrangement is due to the energy gained by the particles, allowing them to overcome the forces of attraction in the liquid and become a gas.
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