FAQ: Clean Penny Science Fair Project?

What cleans a penny the best science fair project?

Science Projects on Cleaning a Penny

  1. Ketchup. Soak your pennies in ketchup to clean them like new.
  2. Hot Sauce. Hot sauce, like Tabasco or taco sauce, also will remove the oxides off pennies.
  3. Coke. Coke and off-brand colas will quickly remove the tarnish.
  4. Citrus Juice.
  5. Pencil Eraser.
  6. Vinegar and Salt.

What kind of juice cleans pennies best hypothesis?

Those tart little lemons work to remove copper oxide because they contain citric acid. Since lemon juice has the highest concentration of citric acid of any fruit, it works the best. Other juices that rank highly include lime, grapefruit, and orange juice.

What is the best way to clean pennies?

Copper oxide dissolves in a mixture of weak acid and table salt-and vinegar is an acid. You could also clean your pennies with salt and lemon juice or orange juice, because those juices are acids, too.

How do you clean pennies without losing their value?

The use of vinegar and salt to clean pennies goes way back. It works on the same principle as using ketchup (Ketchup contains vinegar, salt and tomatoes), but there is less rubbing involved. Mix up a concoction of vinegar and salt. Stir it around to dissolve the salt and then dump in your dirty pennies.

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Why do pennies turn green?

A chemical reaction has occurred! (A chemical reaction is the combination of two reactants to form something entirely new.) A penny is made of copper. The vinegar on the paper towel helps the copper in the penny easily react with the oxygen in the air to form a blue- green colored compound called malachite.

Does lemon juice clean pennies better than vinegar?

Ultimately, lemon juice will clean pennies better than vinegar, though both liquids are viable cleaning options for copper. This means that lemon juice is a slightly stronger acid than vinegar. The stronger the acid, the better it will clean copper pennies.

Can you clean a penny with lemon juice?

Vinegar (or Lemon Juice ) and Salt This method is the best way to clean your pennies, and it will produce a very bright orangey-copper color on your pennies. It does this by using the low levels of acids that are contained naturally in vinegar and lemon juice to remove the patina (brown oxidation) on the penny.

Why do pennies turn black?

The negatively charged oxygen atoms in our air are attracted to the positively charged copper atoms in the penny. When oxygen binds with copper, they form a new molecule known as copper oxide. Copper oxide is brownish or sometimes black in color (depending on other things in the penny’s environment).

Can vinegar damage coins?

Just be sure to rinse off the vinegar with water after you’ve soaked them, since any remaining vinegar residue could cause the coins to oxidize again. First, if you think your coins might be of any value, do not clean them at all, since you can possibly damage them by soaking in cleaners like vinegar.

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What liquid cleans coins the best?

Your Materials For This Science Experiment & Steps Combined

  1. Ketchup. Soak your pennies in ketchup to clean them like new.
  2. Hot Sauce. Hot sauce, like Tabasco or taco sauce, also will remove the oxides off pennies.
  3. Coke. Coke and off-brand colas will quickly remove the tarnish.
  4. Citrus Juice.
  5. Pencil Eraser.
  6. Vinegar and Salt.

Does rubbing alcohol clean pennies?

To soak your coins, you will create a bath using isopropyl alcohol and salt. It is important to note that each of these chemicals is acidic and abrasive. While they will do a great job of cleaning your coins, be careful of how many contacts they have with your skin.

Should you clean old pennies?

In general, old coins should not be cleaned. While you might think that getting all the years of dirt and grime off a coin would make it more valuable, the opposite is actually true! By cleaning a coin, you may actually damage it and decrease its value. At worst, you could permanently damage the coin.

Can you clean coins with toothpaste?

Don’t use toothpaste – Toothpaste is extremely abrasive. It can make your coins appear shiny, but cause significant damage to the surface. Don’t use vinegar and baking soda – When put together, these two common household items create a potent, fizzy mixture that can clean dirt from coins.

Are wheat pennies worth anything?

Most wheat cents ( wheat pennies were minted between 1909 and 1956) are worth about 4 to 5 cents. Those in better condition can have double-digit value. Special examples (especially those in near perfect condition) can be worth much more. And pennies dated from 1879 to 1909 are worth at least $1.

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