ELI5: Explain Like I'm 5

Indicator value

Indicator value is like telling someone how much water is in a cup by looking at it. Imagine you have a cup with different lines marked on it. When you pour water into the cup and it reaches one of those lines, you know how much water is in the cup.

Similarly, an indicator value is like a marker that shows us how much of something is present in a particular substance. For example, if we want to find out how acidic or basic a liquid is, we can use an indicator like litmus paper. When we dip the paper into the liquid, it changes color based on the acidity level. By comparing the new color to a color chart, we can determine how much of an acid or base is present in the liquid.

Overall, indicator values help us determine the properties of a particular substance more accurately by providing a visible sign of the properties in question.