Vinegar with a bit of salt.
Mix a tablespoon of vinegar with a pinch of salt in a small bowl. Dip the penny in the mixture and rub gently with a cloth or your fingers to remove the dirt and grime. Rinse the penny with water and dry it with a soft cloth.
A 1943 penny could be a "steel penny" as they were made of steel due to copper being needed for other wartime purposes. Nickels were made of 35% silver during WWII. If a 1943 penny and nickel were mixed, it would potentially be an error as they wouldn't have been in circulation together due to their different compositions.
A penny is an alloy because it is a mixture of different metals A penny is not an alloy because it's not really a "mixture" of zinc and copper. Post-1983 pennies are 97.5% zinc core with the remaining 2.5% of copper layer on top. Search for "Make a brass penny" to see how one makes a penny an alloy by heating it up enough to melt and mix the metals, making the penny appear gold.
You get copper sulphide, because a metal and a non-metal are reacting.
To create a copper color, you can mix together equal parts of orange and brown. Adjust the amounts of each color based on the shade of copper you desire.
salt and vinegar.
Mix a tablespoon of vinegar with a pinch of salt in a small bowl. Dip the penny in the mixture and rub gently with a cloth or your fingers to remove the dirt and grime. Rinse the penny with water and dry it with a soft cloth.
In 1903, the U.S. penny was made of bronze, which is an alloy of copper (95%) and tin (5%). The penny continued to be made of bronze until 1982 when it was switched to a copper-plated zinc composition.
A 1943 penny could be a "steel penny" as they were made of steel due to copper being needed for other wartime purposes. Nickels were made of 35% silver during WWII. If a 1943 penny and nickel were mixed, it would potentially be an error as they wouldn't have been in circulation together due to their different compositions.
A Penny is not a compound. It's just one word.
A penny is an alloy because it is a mixture of different metals A penny is not an alloy because it's not really a "mixture" of zinc and copper. Post-1983 pennies are 97.5% zinc core with the remaining 2.5% of copper layer on top. Search for "Make a brass penny" to see how one makes a penny an alloy by heating it up enough to melt and mix the metals, making the penny appear gold.
Iridium can form alloys with copper.
Hayden Panettiere has a lab mix named Penny Lane. http://www.celebritydogwatcher.com/2008/08/26/hayden-panettiere-swims-with-penny-lane/
You get copper sulphide, because a metal and a non-metal are reacting.
To create a copper color, you can mix together equal parts of orange and brown. Adjust the amounts of each color based on the shade of copper you desire.
When water and white copper sulfate mix together, the copper sulfate will dissolve in the water, resulting in a blue solution. This is because copper sulfate is a water-soluble compound.
purple