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

www.exploratorium.edu/science_explorer/copper_caper.html

Copper atoms can combine with oxygen atoms from the air to make a molecule called copper oxide. The pennies looked dull and dirty because they were ...

Dirty Pennies | Experiments | Triunfo

cns-eoc.colostate.edu/triunfo/experiments/dirty_penny.html

The pennies are dirty from being used, but there is more causing them to dull. ... But this isn't permanent, you can clean them and make them shiny again!

Chemistry cleans pennies! - Planet Science

www.planet-science.com/categories/under-11s/chemistry-chaos/2011/03/chemistry-cleans-pennies.aspx

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!

What causes pennies to get dirty? - Ask.com

www.ask.com/business-finance/causes-pennies-dirty-a5f49695bbd26892

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 ...

How Do Pennies Get Dirty? | eHow

www.ehow.com/facts_7344498_do-pennies-dirty_.html

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.

Copper & Kids - Copper Experiments

www.copper.org/education/Kids/copperandkids_cuexperiment.html

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.

HOW DOES ACID AFFECT DIRTY PENNIES? - Finishing

www.finishing.com/81/59.shtml

WHAT DOES THE ACID DO WHEN IT CLEANS THE PENNY? BECAUSE I ... The copper oxide makes the pennies look dirty, but they are really not. When the ...

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

coins.thefuntimesguide.com/2008/01/how_to_clean_coins.php

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 ...

Chemical Reaction – Penny Cleaner Kids' Blog

www.indypl.org/kids/blog/?p=9577

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 ...

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

www.instructables.com/id/How-to-Clean-and-Polish-Dirty-Pennies-The-Chemica/

How to Clean and Polish Dirty Pennies (The Chemical Free Way) .... so other metals are generally added to make gold sturdy - that "other" usually tarnishes ...

Popular Q&A
Q: What makes pennies dirty?
A: the oxygen in the air. Read More »
Source: wiki.answers.com
Q: What things make pennies dirty?
A: The Germs On People's Hand's And It Also Depends On Where They Have Been Left Would You Pick Up A Penny That Was In Someone's Mouth In A Lake Or In A Girl Or Gu... Read More »
Source: wiki.answers.com
Q: What makes Penny sick in the movie Dirty Dancing?
A: Penny Johnson, played by Cynthia Rhodes in 1987's Dirty Dancing, Read More »
Source: www.chacha.com
Q: What is a dirty penny?
A: A dirty penny is the brown ring around the Read More »
Source: www.chacha.com
Q: What happens to Penny in Dirty Dancing.
A: Penny got pregnant by that boy Baby's sister was chasing around. Robbie Gould is the character's name. Anyway, the doctor she hired to do the abortion was a qua... Read More »
Source: www.answers.com