How does salt gets dissolved in water?
Water is a polar molecule having both positive and negative ends. A salt crystal is also held together by the force of attraction between positively charged sodium ions and negatively charged chloride ions. When a salt crystal is put in the water, the positively charged hydrogen ends (H+) of the water molecules get attracted to and surround the negatively charged chloride ions (Cl–). Thus the negatively charged oxygen ends (O2–) of the water molecules surround the positively charged sodium ions (Na+). The water molecules enclose these sodium and chloride ions and prevent them from interacting with each other. Thus the ions separate from the crystal and float away in the water dissolving the whole crystal.
