Questions: What is an indicator? What does it indicate?

What is an indicator? What does it indicate?

Solution

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Solution Steps

Step 1: Define an Indicator

An indicator is a substance or device that provides a visible sign, usually by a color change, to signal the presence or concentration of a particular substance or the occurrence of a specific chemical reaction.

Step 2: Explain What an Indicator Indicates

Indicators are used to determine the endpoint of a titration, the pH of a solution, or the presence of specific ions or compounds. They indicate changes in the chemical environment, such as acidity or alkalinity, by changing color.

Final Answer

\(\boxed{\text{An indicator is a substance that provides a visible sign, usually by a color change, to signal the presence or concentration of a particular substance or the occurrence of a specific chemical reaction.}}\)

\(\boxed{\text{It indicates changes in the chemical environment, such as acidity or alkalinity, by changing color.}}\)

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