It forms a layer of black copper oxide on the surface. It also gains weight because it combines with oxygen from he air. This is a permanent change.
no.
Copper oxide appears as a black or dark brown powder after copper has burned.
Well, It's on the cover...
NACHOS
depends on how long, heating at first, boiling, then if let go it would look like a hotdog
it looks like tin foil
Copper and gold look similar, but while gold is yellowish, copper is reddish.
A foil Pokemon card is shiny. Other than that, it looks the same.
no.
Greenish - blue, like (almost) all copper compounds.
yes it makes you look like an idiot
Articles made of gold may be plated with copper ( copper electroplating ). The article will look like copper .
Copper oxide appears as a black or dark brown powder after copper has burned.
they were scary
It's made of copper.
Silver looks soft, kind of like tin foil when its found
White Powder