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What causes pennies to get dirty? | Reference.com


The dark brown color of a penny is most likely oxidation, which occurs when the copper in the penny comes in contact with oxygen. Since the average penny ...

Chemistry cleans pennies! - Planet Science


Dirty pennies; White vinegar; Table salt; Shallow glass or plastic bowl. How to: Put a couple of ... It's the same reaction that makes the Statue of Liberty green!



Put about 5 pennies into the bowl and count to 10 slowly. Take out the ... Do other amounts of salt make a difference in the chemistry of the experiment? Science ...

Why Do Pennies Turn Green? | International Precious Metals ...


If the eraser is too hard, it can leave deep scratches in the penny. Place a dirty penny on a clean cloth and rub gently in a circular motion with the eraser. Flip the  ...

Tips For Cleaning Coins: How To Clean The Old, Dirty Coins In Your ...


The penny looks weird now huh? A dull pinkish color… Now make a concoction out of baking soda and a little water to form a paste. Rub this compound all over ...

How Do Pennies Get Dirty? | eHow


Dirty pennies have a variety of causes. penny graph image by RT from Fotolia. com. There are currently over 130 billion pennies circulating in the United States.

Six Ways to Clean a Penny: A Simple Science Experiment - Playful ...


There is always something so magical and exciting about tossing in a dirty penny and seeing a beautiful clean and shiny penny come out. Well, my seven year ...

Chemical Reaction – Penny Cleaner Kids' Blog


Nov 3, 2015 ... A chemical reaction takes place that makes a molecule called copper oxide – that is the dirty stuff that you see on the penny. This “stuff” is often ...

www.ask.com/youtube?q=What Makes Pennies Dirty?&v=5hQqYLrPuAk
Apr 6, 2011 ... This instructional video is a suitable time-saver that will enable you to get good at science cool experiments. Watch our short video on How To ...

How to Clean and Polish Dirty Pennies (The Chemical Free Way)


For all of you coin enthusiasts out there and elongated penny collectors, you will probably ... With Instructables you can share what you make with the world, and tap into an ... How to Clean and Polish Dirty Pennies (The Chemical Free Way).

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Science Activity: Turn Old Pennies Bright and Shiny! | Exploratorium


20 dull, dirty pennies; 1/4 cup white vinegar; 1 teaspoon salt; A clear, shallow bowl (not ... Copper atoms can combine with oxygen atoms from the air to make a  ...

Dirty Pennies | Experiments | Triunfo


But this isn't permanent, you can clean them and make them shiny again! ... A few dull, dirty pennies ... After 5 minutes, take half of the pennies out of the liquid.

Copper & Kids - Copper Experiments


10 dirty pennies; 4 tablespoons lemon juice; 8 tablespoons vinegar; 1 teaspoon salt; small bowl (not metal!) ... The copper oxide makes the pennies look dirty.