Which of these metals forms 'patina' on exposure to moist air for a long time?
Correct answer: Copper

Player #43943536
Very interesting, I like how much diferent things you can learn in this game. Good work!

Greygranite
the statue of liberty must've looked amazing when it was new!

Lionessa
There is a house in my neighborhood that has a copper roof. Right now, it's still copper color, and it is beautiful. A copper roof will last 70-100 years, is resistant to pests, mold, and fungi, and is virtually maintenance free.

Dorothy
It seems like I have learned about this some time ago.

Dd1
it turns green an example in Dublin.
The Rotunda Hospital and Rathmines clock.