Readers ask: Which Liquid Cleans Pennies The Best Science Project?

What kind of juice cleans pennies best science project research?

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.

Which liquid cleans a penny faster?

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.

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.

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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.

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.

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 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.

How do you clean a dirty penny?

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.

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.

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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.

How do you clean a coin without damaging it?

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 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.

How do you make pennies look new?

For many pennies, one tablespoon (15 g) of salt in 1/2 cup (4 oz) of vinegar will get the job done. Stir the mixture to dissolve the salt. If you don’t have vinegar, use lemon or even orange juice. Copper oxide (the gunk on your pennies ) dissolves in weak acid, and that’s just what all three of these liquids are.

Does vinegar make pennies shiny?

The vinegar made its penny shiny. Pennies become dull over time as copper on the surface reacts with oxygen from the air. The acetic acid in vinegar dissolves these chemicals and leaves the copper surface of the penny looking shiny.

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