Question: Which Liquid Cleans Pennies The Best Science Fair Project?

What liquid cleans pennies the best science project?

Make a solution of vinegar and salt and let the pennies soak. The acid in vinegar, like in citrus, is what really takes the tarnish away.

What solution cleans 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 corrodes a penny faster?

Acid speeds up the oxidation process taking place on copper. If you submerge a penny in even a relatively mild household acid, such as vinegar, it will start to tarnish. Some people recommend the use of vinegar combined with other ingredients, such as salt, to clean pennies.

How do you clean a penny experiment?

What You’ll Do

  1. Guess which liquid will make a penny shine.
  2. Set one penny aside.
  3. In one cup, pour enough vinegar to cover the penny.
  4. In the other cup, pour enough liquid soap to cover the penny.
  5. Wait at least ten minutes.
  6. Remove the pennies, rinse them in water, and rub them with a paper towel.
  7. Compare all three 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.

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.

Does dish soap clean pennies?

2- Use Dish Soap This makes it the perfect formula for cleaning dirty coins. Let the coins sit in the soapy water for five to ten minutes and let the dish soap do its job, weakening the attachment between the dirt and your coins. Once the dirt and grime is loose, rub the coins in your fingers to help remove the dirt.

Why do pennies turn dull?

When oxygen binds with copper, they form a new molecule known as copper oxide. This is why most pennies you see look dirty or tarnished—it’s not actually dirt but copper oxide that makes them look so dull.

How do professionals 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.

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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 ketchup clean a penny?

In order to clean the coins, we have to use a chemical reaction. The best way to do this is with an acid and salt. Ketchup contains vinegar, a weak acid, which breaks down the copper oxide on the surface of the penny. The copper chloride helps the vinegar further break down the copper oxide.

What does vinegar do to pennies?

It turns out that vinegar is an acid, and the acid in the vinegar reacts with the salt to remove what chemists call copper oxide which was making your pennies dull.

How do you clean dirty coins fast?

Follow These Steps:

  1. In a jar, combine one cup vinegar (or lemon juice) and 1 tablespoon salt.
  2. Pour the solution into the plastic container.
  3. Add the coins in a single layer, so none of the coins are touching.
  4. When you remove the coins and wipe them with a cloth or paper towel, they should look shiny.

How do you clean pennies 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 ketchup – You might have learned in science class that dipping a penny in ketchup can restore their shine.

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