Compare the density with coppers known density (8.94g/mL) by weighing the mystery metal's mass and dividing by it's volume, which can be determined by measuring how much water the metal displaces when submerged.
(Additionally, by heating a portion of it briefly in the presence of oxygen a dark blackish-brown color of copper oxide should become visible. Heating it with a direct flame from a small torch should produce a green flame quite easily as well.)
All of these tests will allow one to determine if an item is "REAL" copper. They will not assure one that the copper is "PURE" copper (even the density test can be fooled by a witty seasoned metallurgist)
Let it oxide and see if it's patina is teal. Alternatively, copper has a very specific molecular mass. Measure the volume, measure the mass, compute, compare.
H2so4
Jewelers will use a couple of techniques to find if an item is real gold. The most reliable is a scratch test, they rub the item on a special block that reveals if it is genuine. The easiest way to tell is to put a strong magnet over it. Real gold is not magnetic at all. If there are fillers present it will stick to the magnet, or you will feel it pull towards the magnet.
The gypsum board that is used for home construction is an example of a disk of copper-covered zinc.
Assay it
To copper-plate another metal, the procedure is pretty simple. You need a DC power source, a bath of copper sulphate, and a copper electrode. Connect the positive terminal of the battery to the copper electrode, and the negative to the item to be plated. When the copper electrode and the item are placed in the copper sulphate solution, the circuit is complete and copper electrons will stick to the item.
copper
Let it oxide and see if it's patina is teal. Alternatively, copper has a very specific molecular mass. Measure the volume, measure the mass, compute, compare.
Most real copper pots/pans will have a copper bottom. It will be a different color than the rest of the pot.
585 on the clasp is the percentage of gold in the item. So 585 means ur item is 58.5% pure gold and the other 41.5% will be silver and copper. It is just hallmarked so you can tell it is real, not plated or fake
An English grammar license does not exist. It is a completely fabricated and fictional item that holds no worth, as it is not real. There is no such thing.
they are from copper and copper is from the world
No. Copper is not attracted to a magnet.
Gregorian is the name of a company in the USA that makes products out of copper. The good thing is the item will be marked as 100% copper. Apparently, the company is still in business, but the item might be 20+ years old. I have a napkin holder with curled edges and an art noveau look.
H2so4
Jewelers will use a couple of techniques to find if an item is real gold. The most reliable is a scratch test, they rub the item on a special block that reveals if it is genuine. The easiest way to tell is to put a strong magnet over it. Real gold is not magnetic at all. If there are fillers present it will stick to the magnet, or you will feel it pull towards the magnet.
It tells you the quality of the copper. for example what percentage of the coin is copper