Question: What Juice Cleans Pennies Best Science Fair Projects?

Which liquid cleans pennies the best science fair project?

Create a solution of vinegar and salt using one teaspoon of salt and 1/4 of a cup of vinegar. Mix until the salt is dissolved (it helps if the vinegar is a little warm). Add the pennies. Wait about 5 minutes, then remove the pennies from the solution.

What liquid cleans copper pennies the best?

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.

What liquid will react with a penny the most?

Which Liquids Will Tarnish a Penny Faster?

  • Potassium Sulfide. Potassium sulfide dissolved in water creates a solution that puts tarnish on a penny.
  • Bleach. Bleach will also tarnish pennies.
  • Vinegar. Acid speeds up the oxidation process taking place on copper.
  • Liver of Sulphur. Liver of sulphur will also create a tarnish on any copper surface, including pennies.
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What liquid cleans coins?

What You’ll Need:

  • Salt.
  • White vinegar (or fresh lemon juice)
  • Shallow plastic container.
  • Cloth or paper towel.
  • Baking soda (optional)
  • Toothbrush (optional)
  • Dishwashing liquid (optional)

What cleans a penny best?

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.

What do professionals use to clean coins?

Pour your distilled white vinegar into your shallow bowl. There should be enough vinegar to completely cover your coins. Gently place your coin or coins into the vinegar. Let your coins sit for at least 30 minutes.

How can I make my pennies shiny again?

Vinegar & Salt 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.

Does Coke really clean coins?

Coke and off-brand colas will quickly remove the tarnish. Just don’t drink the coke afterward. Coke contains phosphoric acid that cleans the oxides. Try a variety of citrus juices to see which works best or simply let your pennies soak in lemon juice.

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.

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How do you clean copper that has turned black?

Lemon juice and salt are useful for removing tarnish from copper in three easy steps:

  1. Squeeze the juice of the lemon in a bowl and then sprinkle the salt into the juice.
  2. Stir for a minute until the salt dissolves.
  3. Dip a cloth into the solution and wipe the copper.

How can I darken copper quickly?

Darken copper with green patina

  1. Wipe item clean with a clean lint-free rag dampened with clear, grease-cutting household cleaner.
  2. Mix darkening solution of 2 parts white vinegar, 0.
  3. Spray item with darkening solution.
  4. Allow to set for 1 hour.
  5. Reapply solution with special attention to areas missed on first try.

Does vinegar and salt make hydrochloric acid?

When vinegar is mixed with salt, the acetic acid in the vinegar reacts with the sodium chloride or salt to produce sodium acetate and hydrochloric acid. The hydrochloric acid is a strong acid.

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.

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.

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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.

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