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The red litmus paper turns green because the acid (represented by red) and the base ( represented most commonly by blue) mix their Ph and become a nuetral. In short, red litmus paper in a base turns green.
you put the blob off a blob off the substance you want to test on to a piece of chromotography paper about 10mm from the bottom then fill a flask about 20mm and let the bottom of the paper sit in the water if the substance is pure then there will only be one colour goes up the paper.
I think Neptune's color will not change because its mostly made of water and it has also been blue for a ton of centuries.
The bubble bath has a dye added to it called Bromocresol Green which is a pH indicator, it will change colour as you change the pH of the bathwater - how acid or alkali the solution is. (Interestingly the one colour it never goes is green!)So as you dilute the bubble bath, which starts off slightly acid, the pH then gets higher and the water becomes more alkaline, making the Bromocresol Green change from orange to blue. If the water becomes acid again it will change from blue back to orange.
you mix them up and see what colour it goes
Red, and an alikili goes blue.
The colour of cobalt chloride paper is BLUE when NO WATER is present.When WATER is present it is PINK.
blue
white
yellow and white
I like lilacs and white with light blue.
sea green goes well with ink blue
Lime green goes well.
Baby Blue
white
get a life mate (green)
Blue! Or pink