|Author: Harish 19 Jun 2014 Member Level: Gold Points : 4 (Rs 4) Voting Score: 0|
I think we can identify copper wires by doing scratching test. If the wire is of copper, then it must turn "Yellow-Golden Colour" after some scratches.
There may be another techniques to identify copper. I just provided the easiest way and it can be used to identify copper physically. However, wait for other expert's answers.
|Author: Paresh Gujarati 21 Jun 2014 Member Level: Gold Points : 5 (Rs 5) Voting Score: 0|
One of the simplest method to test pure copper is to apply lemon juice over it. Then rinse it with water and it will glow like reddish colour. This is a sign of pure copper.
Second test, you can find the density of the copper by weighing on electronic weight measurement machine and volume by dimension. If the found density matches with that of pure copper, you can surely tell that the copper you are having is pure.
Third test, you should have spectrometer to test the copper sample. Spectrometer will tell you amount of light with exact wavelength when reflected from sample of copper. If this matches with that of pure copper, sample is 100% copper.