* NaCl: Sodium chloride is an ionic compound. This means it exists as a crystal lattice of positively charged sodium ions (Na+) and negatively charged chloride ions (Cl-).
* Water: Water is a polar molecule. The oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges.
How it works:
1. Attraction: The partially negative oxygen atoms of water molecules are attracted to the positively charged sodium ions (Na+). Similarly, the partially positive hydrogen atoms of water molecules are attracted to the negatively charged chloride ions (Cl-).
2. Surrounding: Water molecules surround the ions, forming hydration shells. These shells effectively isolate the ions from each other, breaking apart the ionic lattice.
3. Dissolution: As more water molecules surround and isolate the ions, the crystal lattice breaks down, and the NaCl dissolves in water.
In summary: The polar water molecules, with their partial charges, interact strongly with the charged ions of NaCl, causing the salt to dissolve.
