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Cleaning Pennies

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by

Hannah Flatt

on 12 January 2013

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Transcript of Cleaning Pennies

I think that maybe if I wouldn’t of diluted the bleach with water
it could of cleaned the penny. In the soapy water, maybe if I added more water to get the water soapier or scrubbed the
penny with a toothbrush it might of actually cleaned the penny too.

I would of tried more cleaning products that might of worked
better. I would of also took a toothbrush and scrubbed ever penny before I rinsed It.

From this project I have learned that I could probably clean
other types of coins this way. Also that I could clean other types of copper. Conclusion

The major results was that 3 of the liquids that I thought would
be cleaned did not get clean at all. I was really happy that my result did support my hypothesis. When I researched my experiment I saw that one
of the best ways to clean a penny was with ketchup. I didn’t want to use ketchup in my experiment because a lot sites did and I had already saw the results from it. I used tomato juice because ketchup is a form of tomatoes and so is tomato soup so I thought I would get a really great result from
using the juice too. Comparing my results to the ones from my sources when using the vinegar and tomato juice was the same. Others who
cleaned with vinegar and ketchup (like tomato juice) worked good as well.
There are stronger or weaker cleaning liquids when cleaning a penny. Different ingredients in the products either affect the penny or do nothing for it. It must be how the copper and metal interacts with what is in the products. I think that if there were any errors in my results was maybe
with the soapy water or bleach. Step 7: After placing each penny in the half cup of water, take it out and dry it thoroughly with the paper it was resting on before and then place it back in front of the solo cup it was once in.
Step 8: Look at each penny thoroughly to determine with penny looks the cleanest.

I crossed my fingers, nervously hoping that the tomato juice penny would be the cleanest!


Source #5- MLA Format: "Penny cleaning experiment." ThinkQuest :
Library. N.p., n.d. Web. 11 Jan. 2013.



This website taught me and showed me examples of how
someone else did their experiment and it gave me ideas on how I should
do mine. I learned what happened after they cleaned the penny with each
product. I didn’t want to clean my pennies with the exact same things
because I already knew the results of those products, I wanted new results.

Source #3- MLA Format: "How to Clean Pennies for a Science Project |
eHow.com." eHow | How to Videos, Articles & More - Discover the expert in
you. | eHow.com. N.p., n.d. Web. 11 Jan. 2013.


This website taught me that because pennies are left around in
places for a very long time they become really old looking and
discolored. It also taught me that pennies are pretty much a worthless
coin.



Source #1- MLA Format: "How To Clean A Penny - How To Clean A Penny." How To Clean A Penny - How To Clean A Penny. N.p., n.d. Web. 11 Jan. 2013.



I learned from this source that you never want to clean a collectible penny because it can make the value of the penny go down. I also learned that if you soak a penny in coke or pepsi long enough it can melt the metal away. It makes you think twice before drinking a coke or pepsi again if it can do that to a penny. Yikes! Hypothesis

My hypothesis for this experiment is that I think the tomato juice
will get the penny the cleanest. I read the ingredients on the back of the tomato juice can and it contains iron. Copper and iron are both metal. So I thought that the iron in the tomato juice will help get rid of the dirt in the penny. Also, when I did research ketchup was a great way to clean a penny so if ketchup did it’s job then tomato juice will because they both come from a tomato and tomato is obviously a great way to clean a penny. Source 1: "Before You Start Cleaning Pennies With Vinegar, Baking Soda Or An Eraser... - The Fun Times Guide to U.S. Coins." The Fun Times Guide to U.S. Coins - Rare U.S. Coins | Coin Collecting | Coin Questions. N.p., n.d. Web. 11 Jan. 2013.

Source 2: "How To Clean A Penny - How To Clean A Penny." How To Clean A Penny - How To Clean A Penny. N.p., n.d. Web. 11 Jan. 2013.

Source 3: "How to Clean Pennies for a Science Project | eHow.com." eHow | How to Videos, Articles & More - Discover the expert in you. | eHow.com. N.p., n.d. Web. 11 Jan. 2013.

Source 4: "Penny cleaning experiment." ThinkQuest : Library. N.p., n.d. Web. 11 Jan. 2013.

Source 5: "PennyCollector.com - The official website for elongated pennies, penny books and penny machines." PennyCollector.com - The official website for elongated pennies, penny books and penny machines. N.p., n.d. Web. 11 Jan. 2013. Bibliography Procedure 1 tbsp. tomato juice
1 tbsp. bleach (diluted with 1 tbsp. water.)
1 tbsp. vinegar
1 tbsp. water (with a quarter size drop of Dawn soap.)
1 tbsp. nail polish remover
6 16oz. Solo cups
5 paper towels torn in half
1 metal tbsp. spoon
5 pennies Materials In this experiment variable the pennies that I am using would be manipulated variables.
The pennies are also independent variables in this experiment because it is the only variable that will be changing in this project.
The constant variables in this experiment are the liquids in this project which is the bleach, nail polish remover, tomato juice, soapy water, and the vinegar. Experimental Design

Source #4- MLA Format: "Before You Start Cleaning Pennies With Vinegar, Baking Soda Or An Eraser... - The Fun Times Guide to U.S. Coins." The Fun Times Guide to U.S. Coins - Rare U.S. Coins | Coin Collecting | Coin Questions. N.p., n.d. Web. 11 Jan. 2013.



This website taught me that cleaning pennies is really not a good idea. Cleaning pennies can harm the pennies and take away the tarnish that the pennies have. A lot of penny collectors actually think that pennies that are old and ugly are actually beautiful.

Source #2- MLA Format: "PennyCollector.com - The official website for
elongated pennies, penny books and penny machines." PennyCollector.com
- The official website for elongated pennies, penny books and penny machines.
N.p., n.d. Web. 11 Jan. 2013.



This website taught me that even though there are many ways to
clean a penny, they can be drawback to cleaning the penny too. I learned
that there are way more ways to clean a penny than I thought there was.
One way is with taco sauce or ketchup, the cool thing about that is now
you can use all the packets of those that you leave in your refrigerator
forever. Purpose
The purpose of my experiment is to figure out what liquid will clean a penny in the best way. I am trying to make “cents” of it all. I am not just showing you the best way to clean only the penny, but all coins. I just chose the penny because Abraham Lincoln is my favorite president. I think that by me finding what penny is the cleanest will help other scientists so they will know as well. Pennies and other monetary coins are some of the dirtiest things you can touch. I think a lot of people get sick because they have touched money. Money gets passed by millions of hands and has touched so many dirty things. You never know where a coin has been. It could have been on the sidewalk being stepped on or in the hands of a sick person. By finding the best way to clean coins you are possibly helping millions of people not get as sick as they would have if they handled a coin. Not to mention it helps make my favorite president shine. The results of my experiment was pleasing in my eyes. After I cleaned
the pennies, rinsed and dry them I thoroughly examined them and
checked to see what penny was the cleanest.

In the pennies that I cleaned with bleach, soapy water, and nail polish
I noticed no difference in the before and after. The pennies looked the
same way.

In the pennies cleaned with the vinegar and tomato juice, I saw a big
difference. The pennies were very shiny and clean as if they were brand
new. At first before I rinsed and dried the pennies I thought that the
vinegar penny was the cleanest, but when after I rinsed and dried them
I saw that the tomato juice penny was slightly cleaner.

This relates to my purpose because I found out what liquids cleaned the
pennies and also what liquid cleaned the penny the best. Results Pennies for my Thoughts… In this project I am testing pennies to figure out which liquid will make a penny look clean and brand new. Follow my directions and you can make your pennies look this way too. Step 1: Gather all of your materials together.
Step 2: Take a sharpie marker and label each cup with a name of each of the liquids. (This is so you can keep track of what penny in being cleaned in what product.)
Step 3: Put 1 tbsp. of each liquid into each labeled cup. (Make sure you stir up the dawn soap water a little bit when you have it in the cup.)
Step 4: Place each penny in each of the 5 cups for 10 seconds.
Step 5: Take pennies out with spoon and place each one on one of the paper towels.
Step 6: One at a time take each penny separately and put into a half a cup of water in the last solo cup. Hannah Flatt
7th Grade
Mr. Roberts
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