What cleans pennies best science project?

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

Which liquid cleans pennies better science?

Your materials for this science experiment and combined steps

1. Ketchup. Soak your pennies in ketchup to clean them like new.
2. Spicy sauce. Hot sauce, such as tabasco or taco sauce, will also remove oxides from pennies.
3. Coca Cola. Coke and off-brand colas will quickly remove the wear and tear.
4. Citrus juice.
5. Pencil eraser.
6. Vinegar and salt.

Do vinegar and salt produce hydrochloric acid?

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

Will lemon juice clean a penny?

The citric acid in the lemon juice reacts with the copper oxide coating on the outside of the penny and removes the coating. As a result, you can see the original copper coating underneath, looking clean and shiny.

Does lemon juice clean pennies better than vinegar?

Ultimately, lemon juice will clean pennies better than vinegar, although 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.

How do you clean a penny with Coca-Cola?

Simply place a coin in a glass or tub and pour Coke over it, enough so that it is completely submerged in the liquid. Leave the coin to soak for about 5 minutes and then check its condition. If you think it needs more time, you can soak it for up to 15 minutes.

How to clean pennies with toothpaste?

Do not use toothpaste: Toothpaste is extremely abrasive. It can make your coins look shiny, but cause significant damage to the surface. Don't use ketchup: You may have learned in science class that dipping a penny in ketchup can restore its shine.

Should I clean the old pennies?

In general, old coins should not be cleaned. While you might think that removing all the years of dirt and grime from a coin would make it more valuable, the opposite is actually true! Cleaning a coin can damage it and reduce its value. At worst, you could permanently damage the coin.

Why do pennies become dull?

When oxygen binds to copper, they form a new molecule known as copper oxide. That's why most pennies you see look dirty or stained – it's not actually dirt but copper oxide that makes them look so dull.

What are the rarest pennies?

These are the 20 most valuable pennies and are worth a total of $5.5 million.

How does baking soda make pennies shine?

Create a paste with two parts baking soda to one part water. Use a microfiber cloth to rub the paste on the pennies. This will bring the shine back to the penny. Rinse the pennies well and dry them with a soft towel.

Can baking soda clean pennies?

Wet the affected coin with clean tap or distilled water, roll it in baking soda and scrub gently with a soft toothbrush. Rinse off the baking soda and residue with more clean water and repeat the steps if necessary.

How do you make pennies look new?

Copper oxide dissolves in a mixture of weak acid and table salt, and vinegar is an acid. You can also clean your pennies with salt and lemon juice or orange juice, because these juices are also acidic.

How can I make my pennies shine at home?

Start by adding a quarter cup of white vinegar or lemon juice to a cup or glass. Mix a teaspoon of salt into the liquid, stirring until dissolved. Place your pennies in the bottom of the cup or glass so they don't stack on top of each other. Wait about five minutes and check your pennies.

Does vinegar make pennies shine?

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

How do you make coins shine?

Follow these steps:

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

Can you use toothpaste to clean silver?

Apply some toothpaste to a microfiber cloth. Rub the silver until the glare is removed. Wash with warm water and dry with a clean cloth.

Why does vinegar and salt clean pennies?

The combination of vinegar (a weak solution of acetic acid) and table salt (sodium chloride) helps dissolve the copper oxide and also forms the blue copper(II) ion, which is soluble in water. The penny is shiny again!

Does salt and vinegar remove rust?

Use 1/4 cup of salt per liter of white vinegar. Pour enough vinegar into the bin to cover the tools. Sprinkle the appropriate amount of salt according to the above ratio evenly over the surface. The vinegar and salt mixture takes time to break down the rust.

What happens if you mix vinegar and salt?

The acetic acid in vinegar reacts with salt, or sodium chloride, to produce sodium acetate and hydrogen chloride.

Why do pennies turn green in vinegar?

A penny is made of copper. The vinegar on the paper towel helps the copper in the penny react easily with the oxygen in the air to form a blue-green compound called malachite.

Why don't pennies turn green?

Newer pennies are 95% zinc and 5% copper. Since they are 'only' 70 years old or so they don't rust as much and don't turn green (not enough copper).