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When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process represents a physical change known as dissociation.
What is it called when an ionic compound dissolves in water?
This process is called dissociation; we say that the ions dissociate. Figure 4.3 Ionic Solutions. When an ionic compound dissociates in water, water molecules surround each ion and separate it from the rest of the solid. Each ion goes its own way in solution. All ionic compounds that dissolve behave this way.
What happens at the particle level when an ionic substance dissolves?
If the attraction between the ions and the water molecules is great enough to break the bonds holding the ions together, the compound dissolves. When this happens, the ions dissociate and disperse in solution, each surrounded by water molecules to prevent it from recombining.
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