Question

Вода испарилась и првератилась в пар. Как при этом изменилось движение и расположение молекул? изменились ли при этом сами молекулы?

Answer 1

Молекулы воды НЕ изменились. Вода перейдя в газообразное состояние, стала обладать свойствами газа, увеличилась расстояние между молекулами и увеличилась их скорость.

Answer 2

Changes in Movement and Arrangement of Molecules when Water Evaporates

When water evaporates and turns into vapor, there are several changes in the movement and arrangement of molecules.

Movement of Molecules: - The movement of water molecules becomes more rapid as they gain energy from the surroundings, leading to an increase in their kinetic energy and the likelihood of escaping the liquid phase. - As the temperature increases, the average kinetic energy of the water molecules also increases, causing them to move more vigorously and eventually break free from the liquid phase to form water vapor.

Arrangement of Molecules: - The arrangement of molecules in the liquid phase is relatively close and ordered, with the molecules being held together by intermolecular forces. - As water evaporates, the arrangement of molecules becomes more dispersed and less ordered compared to the liquid phase. - The intermolecular forces that held the liquid molecules together weaken as the temperature rises, allowing the molecules to move further apart and transition into the gaseous phase.

Changes in the Molecules Themselves: - The actual molecules of water do not change during the process of evaporation. They remain as H2O molecules, but their state changes from liquid to gas due to the increase in kinetic energy and the weakening of intermolecular forces.

In summary, when water evaporates and transforms into vapor, the movement of molecules becomes more rapid, the arrangement of molecules becomes more dispersed, and the molecules themselves do not change, remaining as H2O molecules throughout the process.

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