Here's why:
* Salt is neutral: Table salt (sodium chloride) is a neutral substance. It doesn't have acidic or basic properties that would cause a color change in an indicator.
* Indicators are pH-sensitive: Liquid indicators are substances that change color depending on the acidity (pH) of the solution they are in. They work by reacting with hydrogen ions (H+) or hydroxide ions (OH-) in a solution.
* Salt doesn't affect pH: When salt dissolves in water, it doesn't produce a significant change in the pH of the solution. It remains neutral.
Therefore, if you mix salt with a liquid indicator, the indicator's color will remain the same, reflecting the pH of the water.
