indicator
A compound that changes color in the presence of an acid or a base
An indicator is a substance that can undergo a reversible or irreversible chemical change to indicate the presence or absence of another substance. It provides a visual or measurable signal that a chemical reaction has occurred. Indicators are commonly used to determine the pH of a substance, as they undergo a change in color depending on whether the substance is acidic, neutral, or basic. Examples of indicators include litmus paper, phenolphthalein, and bromothymol blue. Indicators are also used in analytical chemistry to detect the presence or absence of specific substances in a sample, such as glucose, cholesterol, or certain minerals.
More Answers:
The Importance of pH Scale for Chemistry, Biology, and Environmental SciencepH: Importance and Applications in Biology
How Litmus Paper Works: A Comprehensive Guide to pH Testing for Scientific, Medical, and Household Applications
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