Litmus
  Real, long lived, electronically neutral reagent chemical.




pH range: 5.0 8.0

Red when pH < 5.0 Blue when pH > 8.0
Wikipedia Page:

Litmus
is defined with respect to the entities below:
The entities below are defined with respect to:
Litmus
Acid-base indicator (AS/A2 generic)


chemical compound molecule metal molecular science reaction mechanism ionic material acid base geometry reactivity synthesis science knowledge chemistry Lewis