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I'm sure if you looked you would have in your household several objects that are made of polished silver. For example: , or Silver cutlery, or photography equipment. Being just a bit harder than gold, silver is very ductile and malleable. Because of silver's physical properties as a brilliant white metallic luster it can take a high degree of polish. Copper has replaced silver in several instances due to it's hire cost, this is especially true for electrical purposes. Silver has a number of other notable characteristics: - Silver has the whitest color of any metal - Silver has the highest thermal conductivity of any metal - Silver has the lowest contact resistance of any metal - Silver has the highest optical reflectivity of any metal Silver is stable in both pure air and water, but does tarnish when it is exposed to ozone, hydrogen sulfide, or air with sulfur in it.
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