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I dont knao of an liquid sensig material but perhaps one of the temperature sensitive materials would do if the liquid you are sensing does not have the same temperature as the substrate on which you coul apply the liquid crystals that change color according to temperature (there are many in a wide array of temperature sensitive ranges)
The liquid xenon hasn't color.
It is a liquid. A colorless liquid.
To change the color of liquid glue, you should add food coloring.
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Olive DRAB (Dust Recognizable as Blister agent) is a chemical powder that changes color when it comes in contact with liquid nerve or blister agents. It is used as a protective measure to detect the presence of these harmful substances. The color change serves as an indicator and can help identify the presence of chemical warfare agents.
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Red
It changes color
m9 paper
red
Red