* Litmus Paper: Litmus paper is a type of pH indicator. It's made from lichen and comes in two forms: red litmus paper and blue litmus paper.
* Red Litmus Paper: Red litmus paper turns blue in the presence of a base (alkaline) solution.
* Blue Litmus Paper: Blue litmus paper turns red in the presence of an acid solution.
* Neutral Solution: A neutral solution has a pH of 7. In a neutral solution, neither red nor blue litmus paper will change color. They will remain their original colors.
In summary:
* Red Litmus Paper: Stays red in a neutral solution.
* Blue Litmus Paper: Stays blue in a neutral solution.
