* Ionic Compounds: Salt is an ionic compound, meaning it's formed by the electrostatic attraction between positively charged sodium ions (Na+) and negatively charged chloride ions (Cl-).
* Polar Water Molecules: Water is a polar molecule, meaning it has a slightly positive end (near the hydrogen atoms) and a slightly negative end (near the oxygen atom).
* Dissociation: When salt is added to water, the polar water molecules surround the Na+ and Cl- ions. The positive ends of water molecules are attracted to the negative chloride ions, and the negative ends of water molecules are attracted to the positive sodium ions. This attraction overcomes the electrostatic force holding the ions together in the salt crystal, causing the ions to separate (dissociate) and become surrounded by water molecules.
In summary: The dissolving of salt in water is a process of dissociation, where the ionic bonds between sodium and chloride ions are broken by the attraction of polar water molecules, resulting in free Na+ and Cl- ions in solution.
