No US nickels have ever been struck in copper. The alloy they're made from contains copper but it's not enough to give the coins a copper color. Your coin was probably discolored due to dirt, exposure to heat or chemicals, or some other contaminant.
All U.S. nickels minted since 1866 (except for 1942-1945) are 75% copper and 25% nickel.
Nickel cannot replace copper in copper II sulfate because nickel is higher in the electromotive series than copper.
It is made of copper and nickel. A 1949 NICKEL is made from copper & nickel.
Both nickels and dimes are composed of Copper and Nickel. A dime, however, is 91.67% Copper and 8.33% Nickel, while a nickel is 75% Copper and 25% Nickel. Since Copper is a bit denser than Nickel, and a dime contains relatively more Copper, than a dime would be denser than a nickel.
When nickel is put in a copper (II) sulfate solution, a displacement reaction occurs where the nickel replaces the copper in the solution. This results in the formation of nickel sulfate and copper metal deposits on the surface of the nickel.
Present day nickel, dimes and quarters are composed of copper and nickel.
No - copper is a better conductor than nickel.
The nickel 5 cents coin is made of a combination of copper and nickel, with 75% copper and 25% nickel. It gives the coin its characteristic silver color.
copper has more protons than nickel
Look at the coin's edge. It's not silver, it's copper-nickel. All copper-nickel half dollars dated 1971 and later are only worth 50¢ if they're in circulated condition. Uncirculated, perhaps a dollar.
Copper-nickel is an alloy of copper and nickel which have different densities. You need to know the proportions of each metal in the alloy to determine its density.
The coins are copper-nickel and made in the Marshall Islands.