When it comes to metal—be it a copper pan or an antique made from bronze—differentiating between a patina, tarnish, and rust ...

“The tarnish will start to lift right away ... may still be living on a surface from your wipe-down. Imagine that the metal is drinking up the oil—it needs that time to dry in order to ...

This is known as tarnishing. Sodium tarnishes more quickly ... that it is difficult to see that potassium is actually a shiny metal. This is further evidence that potassium is a more reactive ...