Can be sure of gold metal by: the existence of the stamp: a label be located on a piece of gold. The use of the magnet: It can tell if gold adulterated or not by the magnet; where Enkerb magnet of gold if gold was attracted to the magnet it has a ratio of iron. This is one quick and easy ways to detect fraud gold. You can use vinegar; where it is put a piece of gold in the vinegar if turning gold color to black is not gold; because gold does not react with the elements and acids. Use of nitric acid; where it has the ability to solve the metals, but gold does not dissolve in this acid got the erosion it is not gold, but our stomachs least. Rub a piece of gold plank Ceramics; if not leave a color is gold, but if the emulator it leaves an impact on ceramics because his gold yellow shiny, and when rubbing a piece of gold ceramic and the appearance of dark yellow will be seen that piece of gold mixed with copper, so the piece of gold to be adulterated. Uses gold gold used for thousands of years in the instrument of the coin; because gold material has a high value, and are used in financial transactions so long ago. Gold is widely used in the electronics industry, because of the important characteristics that enjoys such as: the ability to connect the power supply with high efficiency, high corrosion resistance, making it ideal for devices that are characterized by low volts such as mobile phones, television, and connecting wires. Gold is used in the computer hardware industry because of its ability to excellent conductivity. Gold is used in dentistry; because of inert ingredients, and because of the ease of dealing with him, and composition in the use of cosmetic fillings.
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