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Essay On Metals
Part 1 of Paper
....ut why do we use it in jewellery?
Gold has a couple of fairly unique properties that have made it
attractive to jewellers throughout history. Prime among these is its
resistance to corrosion. The only chemical that can dissolve or even
tarnish pure gold is "royal water", a mixture so fiendish few of us are
ever likely .... Part 2 of Paper
.... of your skin
and of other jewellery.
The common solution, however, is not without its flaws. "Cutting"
the gold with cheaper metals can mean dramatic savings in material cost and
highly improved resistance to wear but we must remember that it also
changes the other special property of gold - its resistance to corrosion.
Some chemicals in more-or-less popular use in body-piercing circles
(Betadine, to be specific) will tarnish "gold" of as high as 18 K, though
of course it is really the alloyin.... |
| Number of words: 1159 - Approximate pages: 5 |
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