* Electrolytes and Conductivity: Conductivity in a solution is determined by its ability to conduct electricity. This ability is directly related to the presence of free-moving charged particles called ions. Solutions that conduct electricity well are called electrolytes.
* Salt Dissociation: When salt (sodium chloride, NaCl) dissolves in water, it dissociates into its constituent ions: sodium ions (Na+) and chloride ions (Cl-). These ions are free to move throughout the solution.
* Charge Carriers: These free-moving ions act as charge carriers, allowing electricity to flow through the solution. The more ions present, the better the conductivity.
* Tap Water: Tap water contains a small amount of dissolved minerals, including ions, but the concentration is much lower than in salt water. This means tap water has a lower concentration of charge carriers and therefore a lower conductivity.
In summary: Salt water has more dissolved ions, which act as charge carriers, leading to a much higher conductivity compared to tap water.