Suggestion may be sent to the Statewide Interoperability Coordinator, Jim Stromberg, at James.Stromberg@state.mn.us. Definition of Interoperability. Interoperability is the ability to communicate, as needed, on demand, and as authorized at all levels of government and across all Public Safety disciplines. The need for communications interoperability is a significant public safety issue for citizens and emergency responders readily recognized by our local public safety officials.
Other ID Marks. 1) Tarnish. On a freshly broken surface, the color is bright metallic-white. Upon prolonged exposure, it tarnishes black, brown to gray, and dark yellow.2) Silver is the best conductor of electricity. Complex Tests. Dissolves in nitric acid and and sulfuric acid.ilver can be found pure, but is usually mixed with small amounts of gold, arsenic, and antimony. A natural alloy of gold and silver is known as Electrum, and is usually classified as a variety of Gold. Silver is a very resistant mineral. It does not dissolve in most solvent s, and won't react to oxygen or water.
Colored gold alloys. When two metals are dissolved in each other (as is the case with alloys), the color is often a mixture of the two. For example, copper dissolved in gold changes the color from a yellow-gold to a red-gold.Silver dissolved in gold creates a green-gold color.White gold contains palladium and silver. The color of gold jewelry can be attributed to the addition of different amounts of several metals (such as copper, silver, zinc, and so on).he addition of aluminum to gold creates a brittle purple gold. Purple gold used in a pin, and a purple gold inlay within a yellow gold ring. When indium or gallium is added to gold, a blue color can result. The cause of color in these intermetallics is different than that of yellow gold.