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copper,and some precious metals, when exposed to air, turn black, like silver(completely turns black when exposed to air),gold(black spots appear),and others,maybe platinum.
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∙ 13y ago
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What is a discoloration of metal by exposure to air?
Oxidation is the usual cause of discoloration when an iron is exposed to air. The atoms on the surface of the metal react with Oxygen in air to produce a metal oxide.
What metal goes rusty?
most common metals tarnish slowly in exposure to air. metals that tarnish quickly in exposure to air are for example: lithium, sodium and potassium Gold is one of the slowest to tarnish.
What metal cylinder goes on a burner?
Its a barrel
How can you clean metal?
You can clean metal by using some stuff to clear it off and away it goes.
What metal goes green if left outside?
copper
A metal which is used in coins and slowly goes black in air?
You are most likely referring to silver which will tarnish with time and often turns black (although depending on the composition of the gas its exposed to it can turn any colour of the rainbow)
When a metal powder is heated in open dish it turns black which metal is that?
The metal might be copper. When copper is heated, it reacts with oxygen in air forming copper oxide which is black in colour.
Does sound waves travel fastest through air?
it goes fastest through metal
Why is it when a piece of copper is folded squashed and heated in air only the outside of the copper is black?
The black coating you see is a coating of copper oxide, which forms when the hot metal reacts with air. no air can reach the inside, so it does not react to form black copper oxide.
How do you defeat minion in twisted metal black?
Shoot all the squares on the truck then his force shield goes down then you go from there
How would I fix a front spring problem on a 97 Lincoln continental after I found a black horseshoeu shape piece of metal by passenger side on garage floor.?
that horseshoe shaped metal is to hold the air cylinoid into the air spring. check the air cylinoid make sure it is in place. that horseshoe shaped metal is to hold the air cylinoid into the air spring. check the air cylinoid make sure it is in place.
Where is the jump point on a 2007 dodge sprinter van?
Under the hood on the driver side there is a red part on the air cleaner. Push the round disc back and attach the red cable there. The black cable goes on the metal stud on the inner fender.
How did black metal get its name?
From Venom's album "Black Metal".
What is the fastest air plane?
the sr-71 black bird is it goes about four times the speed of sound
What band goes from a high pitch voice to a death metal voice?
Many. Ex: Chelsea Grin, The Black Dahlia Murder...
What country did Black Metal originate from?
Really the first black metal band was Venom, from England. But the country most known for black metal is Norway. The black metal bands there defined the genre.
Black tooth twisted metal?
Sorry, but I don't believe there is a black tooth twisted metal, what you must mean is Twisted metal black.
