Blue litmus paper
Being inert and unreactive, pure gold does not react with any acid except aqua regia. Thus its colour does not alter.
Phenolphthalein turns pink when it comes into contact with a basic solution, due to a chemical reaction that changes its molecular structure.
Yes, aluminum can stain clothes when it comes into contact with them.
Yes, chlorophyll can stain clothes when it comes into contact with them.
Just to remember:Lithmus color in:aciD turns reDand in:Base turns Blue
changes color
It changes colour.
It changes color.
it changes color
It changes color
Because it call sense the difference between a base and an acid.
It changes color
It changes color.
blue color
it changes color
it changes color
It changes color.