As atoms gain energy, they move faster and slide past one another more easily. atoms at the surface of the substance overcome attractions to nearby atoms and break free of the surface. which change of state is taking place? liquid to gas gas to liquid liquid to solid solid to liquid

The ability to gain energy from other atoms and move faster and slide over one another more easily is a characteristic of liquids. As liquids are a state of matter in which particles are loosely packed, but they have enough space amongst them to slide past each other. They have a definite volume, but changes shape according to the container. Also the liquid particles are observed to move more rapidly than in a solid, they are fast enough to overcome the forces of attraction between them, which allows liquids to flow freely and take the shape of the container they are poured into.

The second is gas. The whole transformation occurs from liquid t gaseous state. As in gaseous state, particles are observed to be in a constant state of motion and rarely close to each other. They are seen to be free and spread in all directions. It expands to fills the available space for it. It also changes shape and volume. The gaseous particles move fast enough to break away from each other.

nacl is added to the aqueous of what? ? in order to get a proper answer you have to specify the exact composition of the aqueous solution.

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