No. It dilutes the alcohol, the very same way that adding water would, because that's exactly what you're doing. You're adding water, you're just adding it more slowly. read more
No, ice in cocktails does not absorb the alcohol. When the ice melts into water, the water dilutes the cocktail and makes it “weaker”; there is a lower concentration of alcohol in the cocktail than there was before the ice melted. read more