Alcohol is a solvent: It dissolves stuff. The leaf is porous, full of holes. When the leaf is placed in the alcohol, the alcohol gets into the leafs, and dissolves the pigments in the leaf, probably chlorophyll, which is green. This will turn the alcohol green.
Green rubbing alcohol is used in the same ways that regular rubbing alcohol is used. It is used for first-aid like scrapes and cuts, but generally has additives like menthol oil to smell and feel tingly and minty.
only if you had green beer
If you're talking about what I think you are, it's because the alcohol extracts the chlorophyll (which is green) from the plant cells.
These pigments are more soluble in alcohol.
Appletinis, certain brands of absinthe, and Midori melon liqueur (or anything that has a lot of the stuff mixed in) to name a few.
It is to remove the chloroplast and dissolve in the alcohol and turn it green.
40%
The name is ethanol and it si also called ethyl alcohol, pure alcohol, grain alcohol, or drinking alcohol.
green
Chlorophyll
alcohol