Acid-base Indicator (Noun)
Meaning
An indicator that changes color on going from acidic to basic solutions.
Classification
Nouns denoting substances.
Examples
- Litmus is a well-known acid-base indicator that changes from red in acidic solutions to blue in basic solutions.
- Phenolphthalein is another acid-base indicator that changes from colorless in acidic solutions to pink in basic solutions.
- Methyl orange is a synthetic acid-base indicator commonly used in chemistry experiments.
- The acid-base indicator used in the experiment was bromothymol blue, which changed from yellow to blue as the solution became more basic.
- A mixture of different acid-base indicators can be used to create a pH indicator strip that displays a range of colors for different pH levels.