Making some researches to answer my last post, I found this article.
It explains that when a piece of zinc and a piece of copper are connected with a conductor, since copper is more elctronegative than zinc, electrons start to flow form zinc to copper till too many electrons has reached the piece of copper and they start to repel the others. Is this explanation accurate?
Can you generalize this observation for other elements connected through a conductor?
Does it work for solid and liquids?
I'm not stating that there will be an electricity flow, I'm asking if there is an amount of electrons that will converge from the zinc to the copper. Even if it happens for a millisecond.