[DOC] [TLE] Patina - Wikipedia [PAR] Patina is a thin layer that variously forms on the surface of stone; on copper, 
bronze and similar metals (tarnish produced by oxidation or other ... The green 
patina that forms naturally on copper and bronze, sometimes called verdigris, ... 
Often, antique and well-used firearms will develop a patina on the steel after the 
bluing,... [DOC] [TLE] Verdigris - Wikipedia [PAR] Verdigris is the common name for a green pigment obtained through the 
application of acetic acid to copper plates or the natural patina formed when 
copper, brass or bronze is weathered and exposed to air or seawater over a 
period of time. It is usually a basic copper carbonate, but near the sea will be a 
basic copper ... The vivid green color of copper(II) acetate made this form of 
verdigris a much... [DOC] [TLE] Why Does Copper Turn Green? - Live Science [PAR] Feb 9, 2013 ... Copper turns green because of chemical reactions with the ... Just as iron that is 
left unprotected in open air will corrode and form a flaky orange-red outer layer, 
copper ... (which is why the roofs of so many old buildings are bright green). In 
fact, the weathering and oxidation of the Statue of Liberty's copper... [DOC] [TLE] Bronze: Characteristics, Uses And Problems - GSA [PAR] Aug 5, 2016 ... Bronze is an alloy of copper which can vary widely in its composition. ... and 
progresses through several predictable "stages" of oxidation and corrosion. ... 
Corrosion of one form or another is the chief cause of the deterioration of ... The 
actual film composition is dependent upon the type and concentration of... [DOC] [TLE] Green film produced by oxidation, 6 letter, 2nd letter A, crossword [PAR] Film caused by oxidation.  Film on antique bronze.  Film on bronze.  Film on the 
Statue of Liberty?  Formation on copper.  Green coat.  Green crust on metal. [DOC] [TLE] Corrosion Protection & Resistance: Green Patina Finishes - Copper ... [PAR] The much admired natural protective coating of a blue-green patina 
characterizes ... as well as bronze statues and other copper metal surfaces 
exposed to the weather. ... In seacoast locations, chloride salts may form an 
essential part of the patina film. ... Oxide film on the copper will cause poor 
adherence of the patina. [DOC] [TLE] Copper Facts - Copper Development Association [PAR] It is a major industrial metal because of its high ductility, malleability, thermal and 
... with copper-alloy instruments, and copper in various forms was a mainstay in ... 
bronze cannon, spikes and pumps for the U.S.S. Constitution, known as "Old 
Ironsides. ..... The color-change is the result of surface oxidation caused mainly 
by... [DOC] [TLE] Removing tarnish on brass, copper, bronze - Finishing [PAR] To remove tarnish from brass/copper/bronze, you may need a formulation ... Q. I 
have an old fireplace which is so tarnished/corroded I can barely tell what metal it 
is. ... I would love to be able to see the beauty of this 1907 fireplace in it's original 
state.. ... The green finish, for lack of a better word, looks like when copper ages. [DOC] [TLE] Why does bronze and brass turn green? - Quora [PAR] Bronze and brass turn green due chemical reactions between the copper in 
those alloys and ... Is it possible to easily repatinate antique bronze that has been 
polished or over-zealously cleaned? Why does ... Water reacts with the copper in 
them (oxidation) turning them green over time. What Causes Copper to Turn 
Green? [DOC] [TLE] Patina - definition of patina by The Free Dictionary [PAR] A thin greenish layer, usually basic copper sulfate, that forms on copper or 
copper ... (Metallurgy) a film of oxide formed on the surface of a metal, esp the 
green ... 3. the sheen on a surface that is caused by much handling ... 1. a film or 
incrustation, usu. green, produced by oxidation on the surface of old bronze and 
often... [DOC] [TLE] How

Question: Caused by oxidation, it's the greenish film that forms on copper or old bronze
Answer: Patina