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What is used to describe the number of atoms in a copper penny?
The term "Avogadro's number" is used to describe the number of atoms in a copper penny. This number is approximately 6.022 x 10^23, which represents the number of atoms in one mole of any substance.
What is the best way to clean of remove deposits from a copper penny?
To clean or remove deposits from a copper penny, try soaking it in a mixture of vinegar and salt. You can also use lemon juice or ketchup to help dissolve the deposits. Gently scrub the penny with a soft toothbrush to help remove any remaining residue.
Are there any valuable copper US pennies and if so what years?
There are many years that have valuable 1 cent coins. For Lincoln cents, this usually will involve a combination of the year and the mintmark -- a small "D" or "S" below the date. You can find a list of retail values for all the different types of U.S. cents here : http://www.numismedia.com/fmv/fmvcents.shtml
Is copper tubing homogeneous?
That's true for cents made from 1793 to 1942 and from 1944 up to mid-1982. They were struck in homogeneous metals, either pure copper or alloys that mixed copper with bronze, tin, zinc, and/or nickel. In 1943 cents were struck on steel blanks to save copper for the war effort; they were coated with zinc to keep the steel from rusting so they are not homogeneous. In 1982 the price of copper rose to where a penny cost more than a penny to make, so the mint switched to using copper-plated zinc. Note there is a specific category for Coins and Currency that makes it much easier to find numismatic questions.
Copper in penny?
Assuming that you are asking about US Lincoln cents: If they are dated 1909-1982 (except 1943-46) - they are 95% copper and 5% zinc (with a tiny amount of tin up through 1962) and weigh 3.089 grams (147 to the pound) - 3.25g of copper per. If they are dated 1982-onward - they are 2.5% copper and 97.5% zinc and weigh 2.500 grams (181 to the pound) - 0.0625g of copper per. If they are dated 1982 - its tough to tell, because both types were minted. If they are dated 1943 - they are made of zinc coated steel and contain no copper If they are dated 1944-1946 - they are made from old brass shell casings (I'm not sure of the copper content, but likely similar to other pre-1982 cents).
Is the English Penny bronze or brass?
For many years up to and including 1792, the British Penny was silver. From 1797 to 1860 inclusive, the Penny was copper. From 1860 until its last minting in 1967, the Penny was bronze. From 1971 to 1992 inclusive, the decimal (New) Penny was bronze. From 1992 to present, the decimal Penny has been made from copper plated steel. The only British decimal coins with any brass in the alloy are the One and Two Pound coins.
Will a copper penny scratch a quarts?
No because a coper penny is and quartz is 7 so any ting softer than 7 cannot scratch
Can a copper penny be turned into gold?
No, a copper penny cannot be turned into gold through any known chemical or physical process. Gold is a different element with its own unique properties and cannot be created from copper pennies or any other material.
What pennies are valuable?
any copper penny is worth more than its face value.
What is a copper penny worth today?
Any US cent dated 1982 and before is mostly copper, billions are still in circulation and are face value.
What is the value of a 1943 penny?
it is not rare enough to have any value [will have value in about 3 years]
1943 copper wheatback penny with no mint mark what is it worth?
you have a 1943 penny that looks like it is made out of copper, this is how you can authenticate it to tell if it is a genuine 1943 copper penny, or a fake 1943 copper penny. But first of all, be aware that the 1943 penny was issued in zinc-coated steel, because the USA needed copper for the war effort. Any genuine 1943 copper pennies are extremely rare mint errors. Learn more about your silver colored 1943 Steel Penny. The easiest way to tell if your 1943 copper cent is merely a copper-plated steel penny is to test it with a magnet. If the magnet sticks to the penny, it's made of steel which has been dipped or plated in copper. Such a penny is worth about 15 cents as a novelty item. If your 1943 copper colored penny doesn't stick to a magnet, then look at the date carefully (using a magnifying glass, if possible.) If the tail of the 3 doesn't extend well below the "line" of numbers, it is probably a cut-in-half 8. A very common fraud involving the copper 1943 cent is to cut away part of the 8 in the date of a 1948 penny. If the 3 in your date looks like half of an 8, your coin is not a genuine 1943 copper penny. Any time you have a potentially valuable coin, it's always a good idea to take it to a qualified coin dealer for a professional opinion. Most dealers do not charge to have a look at your coins and give you an informal verbal appraisal. More Coins Quick Tips Coin Values Guide
What mineral can be scratched by a steel knife but not a copper penny?
Copper. Copper has a hardness of 2.5-3 on the Mohs scale, while a steel knife generally has a hardness of around 5.5 - 6.5. This means that a steel knife can scratch copper, but a copper penny cannot scratch a steel knife.
How does copper penny work in vase of flowers?
Copper is an algacide. When placed in water the copper penny or any other small piece of copper will start to act with the oxygen in the water and oxidise (the copper turning blue green in the process). The increased level of copper in the water retards or prevents the growth of algae in the vase. Works best in clear glass vases where algal growth is normally high.
Head you have a tail you are brown you have no legs?
A penny has a head and a tail. When the copper oxidizes, it turns brown. And it does not have any legs!
What is the copper value of the one 2010 penny?
Pretty much non-existent. Post-1982 pennies are zinc with a very thin copper coating and contain very little copper of any economic value.
What kind of soda changes the color of a penny?
Coke or sprite will change the color of a penny.
