What cleans a penny better experiment? Pour 1⁄2 cup of vinegar into the bowl and add 2 teaspoons of salt to it. Hold a penny halfway into the liquid for about 15 seconds and remove it. Make some observations. Put the rest of the pennies into the vinegar/salt solution and wait 10-15 minutes.
What substance will clean a dirty penny?
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.
Which soda cleans pennies the best science project?
What cleans a penny faster vinegar or water?
What is the purpose of the vinegar salt solution in the penny experiment?
How do you clean a penny hypothesis?
Hypothesis: If I put a copper penny in coca cola, soap and water, ketchup, white vinegar, and salt and vinegar will clean the copper penny the best because the vinegar and salt has the most acid.
Does hydrogen peroxide clean pennies?
Place coins in a bowl and pour enough hydrogen peroxide to cover the coins . Let the coins soak for 24 hours. Rinse them with water, then dry with a cloth.
Will vinegar clean a penny?
Ordinary vinegar can be used to rid old coins of the gunk they’ve gathered over time . To restore pennies to their original luster, simply plop them into a solution of vinegar and salt, let them sit for a few minutes, then rinse them off and watch them shine like new.
What liquids can clean a penny?
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.
Why does ketchup clean pennies the best?
Ketchup contains vinegar, a weak acid, which breaks down the copper oxide on the surface of the penny . The salt in the ketchup goes on to add dissolved chloride ions to the mix. These ions bond with the copper, forming copper chloride. The copper chloride helps the vinegar further break down the copper oxide.
Which juice cleans pennies best?
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.
Does lemon juice clean pennies?
Pennies are made out of a metal called copper. The copper mixes with oxygen, the same gas that we breathe. This cause something called oxidation and makes the penny look dirty. Lemon juice has acid in it that removes the dirty color or oxidation and makes the penny nice and shiny again!
What happens when you soak coins in vinegar?
The vinegar made its penny shiny . Pennies become dull over time as copper on the surface reacts with oxygen from the air. The two elements combine to form dark chemicals called copper oxides. The acetic acid in vinegar dissolves these chemicals and leaves the copper surface of the penny looking shiny.
How do you clean a coin experiment?
- Guess which liquid will make a penny shine.
- Set one penny aside. ...
- In one cup, pour enough vinegar to cover the penny.
- In the other cup, pour enough liquid soap to cover the penny.
- Wait at least ten minutes.
- Remove the pennies, rinse them in water, and rub them with a paper towel.
- Compare all three pennies.
How does baking soda make pennies shiny?
Why do pennies change color in vinegar?
When copper is exposed to oxygen, it forms molecules called copper oxide that make pennies look dirty. Pouring vinegar over the pennies helps break up this copper oxide and expose the pure copper on the penny . As the penny dries and is exposed to the air, a chemical reaction occurs and the penny turns green!
Does olive oil clean coins?
Will alcohol clean pennies?
Will acetone clean pennies?
How do you clean an old penny without damaging the value?
Cleaning your old coins with gentle dish soap and water can loosen some of that built-up dirt. Fill a small plastic container with warm water, add a few drops of mild soap, immerse the coins, and rub with your fingers or a soft toothbrush to clean.
How do you clean a penny with Coke?
What happens when you dip a penny in salt and vinegar?
Pure copper metal is bright and shiny, but the oxide is dull and greenish. When you place the pennies in the salt and vinegar solution, the acetic acid from the vinegar dissolves the copper oxide, leaving behind shiny clean pennies . The copper from the copper oxide stays in the liquid.
Why does lemon juice clean pennies better than vinegar?
Why does hot sauce clean copper?
How does hot sauce clean a penny? Vinegar works because of the salt and acetic acid it contains . Hot sauces, like as Tabasco or taco sauce, are also effective for removing the oxides off pennies.
How does soy sauce clean pennies?
The acid plus the salt allows Cl- ions in solution, which are highly corrosive toward copper oxide, ionizing it without any effect on the copper base metal, leaving a shiny finish . Ted Mooney, P.E. As a followup, I tested ketchup vs. soy sauce vs.
Does Brown Sauce clean coins?
Primary 7 had great fun yesterday doing their science investigation. They used a variety of different liquids to try to clean old dirty copper coins. Water, washing up liquid, vinegar, cola, tomato ketchup, brown sauce and tabasco sauce were all used to try to clean the coins .
What will make a penny shiny?
Does lime juice clean copper?
Clean slightly tarnished brass or copper with half a lemon or lime dipped in salt . The salt works the acid from the lemons or limes deep into the tarnish and scrubs away the bits of dirt and grime.
Does vinegar eat copper?
How do you clean a penny with baking soda?
How do you clean an old penny without damaging the value?
Cleaning your old coins with gentle dish soap and water can loosen some of that built-up dirt. Fill a small plastic container with warm water, add a few drops of mild soap, immerse the coins, and rub with your fingers or a soft toothbrush to clean.
How do you clean a penny without damaging it?
How do you make an old penny shiny?
Vinegar is a very weak acid on its own, but mixing vinegar and salt creates a slightly stronger acid that will eat away all the copper oxide, and leave you with a nice, shiny penny!
