Are there any household chemicals I can use to test for silver?
I just bought 14 very old Mexican coins at a flea market(for 50 cents each) and I want to find out if they contain any silver.
It is quite possible that they are already tarnished and blackened in color. If that is the case, then get a bottle of silver tarnish remover which should clean up only the tarnish on silver. You can buy such a bottle at walmart for a few bucks.
Now if they are clean, then the idea is to tarnish them if they contain silver on the surface, heh. The idea is to cause the silver on the surface to react to sulfur to create a silver-sulfate tarnish that is black in color and cannot be “rubbed” off. To produce such a reaction, take a source of sulfur and place it on the surface and heat it up for a little bit. Afterwards, if it has a black stain that cannot be rubbed off or washed off, then it is silver. The only way to remove the tarnish is then with the aforementioned silver tarnish remover. (I heard vinegar might be a possible reagent, but I am not sure).
Sources of sulfur include a typical match, rocks of sulfur, and some brands of yellow mustard. For the match method, you don’t actually want to use that match as the source of heat, rather, hold the match in contact with the surface, then heat both the metal and the match with another heat source (like a lighter). For the mustard method, place a dab of the appropriate sulfur containing mustard on the surface and then heat both the mustard and the metal.
Diddy Kong Racing Walkthrough Pt 80: Adventure 2 – Snowflake Mountain Silver Coin Challenges
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