pennies cleaning science experiment conclusion pennies cleaning science experiment conclusion
All you need for this science experiment are vinegar, salt, a glass jar, and dirty pennies.1. Thanks for sharing! So there you go, thats how it cleaned the coins too. Oranges? You see, copper coins are usually shiny and well, copper-colored. And don't worry, I give the science behind it all! All pennies start out the same color beautiful and bright copper. . Try more solutions. You can dispose of any extra ketchup how you normally would. Put a dollop of ketchup on a plate. Ketchup also contains a lot of salt, which helps add to its acidity. What do your results tell you about the special properties of copper pennies? Here is a step by step walkthrough of the experiment so you dont get forget what to do or lose track of where you are: Once this is all done, you may be tempted to clean everything but not yet! Well, heres something even more fascinating. 1. Could you have cleaner pennies if you just used running water? I believe learning should be enjoyable and engaging. Here is the full list so you can tick them off with your kids as you collect them: When it comes to what liquids you and your kids can use in this experiment, part of the fun is asking them what they think would be good to use and trying it out. It does this by using the low levels of acids that are contained naturally in vinegar and lemon juice to remove the patina (brown oxidation) on the penny. Salt is also a key ingredient in the other cleaning agents, thus making them effective in cleaning the pennies. Luckily, there are a number of ways to clean pennies and make them look bright and shiny again, using chemistry! Check the ingredient list for your Ketchup and Tabasco sauce some of the labels might list vinegar or citric acid, while others might say tomato puree. As you are drying them, you'll notice that rubbing results in some of the dirt coming off the pennies. Science - Lesson 3 of 50 - Grades 4,5,6 Here is how to set up your cleaning pennies experiment. Medioimages/Photodisc/Photodisc/Getty Images. Oxygen in the atmosphere has a negative charge that is attracted to the positive charge of the copper in the penny. Who knew learning how to clean a penny could be so much fun? After the 10 minutes have passed, use the tweezers to take the coins out of each cup. This blue-green is called malachite and copper can turn into malachite over many years of exposure to chlorine and oxygen. In this activity you experimented with 4 different cleaning methods to determine which was the most effective at cleaning pennies. Begin by pouring the vinegar into the bowl. Add the pennies. Coke contains phosphoric acid that cleans the oxides. Which is the least clean? Which penny is the cleanest, compared to the control? The vinegar cleans the penny due to the acid in the vinegar. Well, its time to look at what is in our catsup! Learn how to wash Rothy's shoes so your go-to flats and loafers always look their best. The young scientist tries to find out which of several solutions will clean pennies best, eliminating the copper oxide that gives the surface a dull and tarnished appearance. Put 1 tablespoon Tabasco into each Tabasco cup. For my class, I just had to explain the process, give them a definition of a hypothesis (letting them know it's okay to be wrong! Make each cell (square) of the table large enough to place your penny in it after your testing is complete. We are actually performing a chemical reaction that breaks down the copper oxide. When the penny is clean, remove it, rinse it with fresh water, and set it aside to dry. How to Wash Rothy's Shoes & Flats & Keep Them Odor Free. After all the pennies have soaked for about five minutes, it is time to pull them out. All you need are, , water, dish soap, salt, and vinegar. The answer is pretty simple before 1982, pennies were made almost entirely from copper, and modern pennies are made of copper-plated zinc. We use cookies and those of third party providers to deliver the best possible web experience and to compile statistics. Pennies are good for more than just buying penny candy. Please enter a search term in the text box. Thats great to know Aayeshi. How do they feel? It also benefits your kid in a lot of ways too. I preceded the, a presentation from the U.S. Mint site on how coins are made. Answers to, Questions: 1 colour page Scrub each penny for 10 seconds, then rinse it again with water and place it back into its cup. Put 1 tablespoon Ketchup into each Ketchup cup. Have your kids write down their findings on their piece of paper ready to summarize their findings and talk through the explanation. Also, Copper oxide easily dissolves in acid. Use your paper and pencil to create a table like the one below. In the first cup, put plain water. Science - Lesson 2 of 50 - Grades 4,5,6 The oxygen in the air and the copper in the pennies form an oxide that coats the pennies and makes them look dirty. It included a shiny new coin, one blackened and covered in ver, Smart Board Lesson for Beginning Learners, Introduce your students to the process of scientific experimentation, lesson. Lawrence holds a Bachelor of Fine Arts in screenwriting from New York University and a Master of Science in childhood education from Brooklyn College. You also may have noticed that the longer the pennies stayed in the cleaning solution, the cleaner they became! You can only guess how highly acidic this ketchup must be! As an Amazon Associate I earn from qualifying purchases. The acid in ketchup is acetic acid, commonly known as vinegar. The coins that were submerged in those cups should come out nice and shiny, while the rest are still a little dull and dirty. I love coming up with simple and fun learning and STEM activities for kids. 'Elephant's Toothpaste, ' link: method. Carefully remove each penny from its solution. But we think that that alone could not clean coins this quickly. Here is the science of cleaning pennies with ketchup. So, the acetic acid in vinegar dissolves the copper oxide and cleans it. Post your question for our scientists. The chlorine ions bond with the copper in solution forming some sort of copper chloride, allowing the acid to break more of the copper oxide free from the penny. As in ketchup, salt and vinegar are both in hot sauce. Lesson Cover: 1 colour page Label each cup with a pen so you and your kids know what liquid is in each up. Antique Singer Sewing Machines That Changed the Game, Although they are often found at garage sales, flea markets, and estate sales with very low price tags, there are several models of antique Singer sewing machines that are highly sought after by co, 62+ Fun Family Night Ideas and Activities You'll Want to Give a Go, Family night ideas include fun games and activities any family can enjoy together at home or in their neighborhood. They each include Question, Hypothesis, #1-How many drops of water can you fit on a, #2-Which liquid can you fit the most drops of on, to hook those kiddos and get them writing up a lab report! This product is designed to teach people how to clean old, tarnished pennies using simple household items such as vinegar and salt. However, that uniquely, How to Clean Nike Air Force 1s so They're Good as New. Add highlights, virtual manipulatives, and more. Which solution will clean copper pennies the best, soap and water, Lemon Juice , vinegar and salt, coca cola, or ketchup? To remove this tarnish, an acid needs to be used to weaken the bonds between the copper and oxygen atoms. In this case, talk with the young scientist about which solutions he or she thinks will best clean the pennies. What will happen when the liquid cleans the coin? 2002-2023 LoveToKnow Media. Her articles appear on the Sixth Wall and other websites. Next should either be the soda/fruit juice or vinegar (sometimes these switch depending on what type of each you have used) because their pH is usually around 3, so they are mildly acidic. Making an hypothesis is easy its basically asking a question! we do during the week of Presidents' Day or when we are talking about coins in Math. However, over time, they turn dull and dark. Why or why not? If you have chosen to do the extra second step with your kids, then you will have noticed upon your frequent checks that the coins will have turned a blue-green color after being left to air dry. 2. Leaving your pennies in the cleaning solution longer gives the reaction more time to continue, and gives you shinier pennies! Simple, any age students! Place the pennies in the bowl, and allow them to sit for several minutes. Toasted Italian Sandwich - Food Fun Friday. Step 4: (Or have a fun science fair project?) Teacher Notes: Photos and Youtube Video: 1 colour page You can find this page online at: https://www.sciencebuddies.org/stem-activities/shine-bright-like-apenny. Vinegar and lemon juice are both acids. These boxes are presented in partnership with Popular Mechanics so you know you'll be getting some great stuff each month. Pour cup of baking soda into one of your plastic cups. If you line up your pennies in order from the dirtiest to the cleanest, the order should go something like this: Water, Soda/Fruit Juice, Vinegar, Ketchup, and Vinegar and salt mixture. The ketchup is most likely what will surprise your kids the most (and lets be honest perhaps you too!). A chemical reaction between the vinegar and the salt removes copper oxide. What do your results tell you about the special properties of copper pennies? In this case, you may have noticed that the Ketchup and Tabasco pennies were not quiet as well-cleaned as the pennies that were in the vinegar and lemon juice. Place each of the pennies in the 1 minute column into their corresponding cup. Most of these aren't substances that are typically used to clean, which is part of makes guessing how they will affect the pennies more fun. 12-Page Black & White Download Well, after you wash the ketchup off, that is. Were there any cleaning methods where the time didnt matter, so the 1 minute and 5 minute pennies are equally clean? Now closely look at each coin. Repeat step 4 two more times. Get your copper coins out of the containers where theyve been hiding for many years and get them cleaned. Adding salt to any of the acids (lemon juice, vinegar, etc) makes this acid cleaning more effective by creating free hydrogen atoms in the solution, which increases the acid's strength. And see whats the sciencebehind this phenomena. Since most pennies made after 1982 are made out of zinc with a thin copper coating, you used real copper pennies to get the true effect. We're going to try this out today! Through the data and . The unlikely condiment you need to be sure to include? It was originally a dark brown color because it was made out of copper and over many years, it has slowly turned blue-green because the copper has transformed into malachite! Slowly add water, 1 tablespoon at time, until youve created a paste. Hypothesis: If I put a copper penny in coca cola, soap and water,. Which one do they think will clean the coin the most? Here's what a young scientist will need to get started: In order to perform this simple experiment, do the following: Once the results are in, talk to the child about which pennies look the cleanest and if they can see any patterns regarding which solutions seemed to do the best job. TEN Quick and Easy Science Experiments for Kids! Put 1 tablespoon of Vinegar and 1 teaspoon of salt into each Vinegar cup. This is because copper reacts to oxygen in the air and it turns into a compound called copper oxide. The pennies have become tarnished as the copper coating reacts with oxygen in the air and forms a copper oxygen compound, which makes the pennies appear brown. Place the pennies in the bowl, and allow them to sit for several minutes. The chemistry behind the experiment is simple yet interesting, and the project is easy for children of all ages to do. Salt! Why is that? Check the coins, then come back again in another 30 minutes and see what has happened to the coins. Water from the tap is fine. Hot Sauce Hot sauce, like Tabasco or taco sauce, also will remove the oxides off pennies. Look for pennies made before 1982 and roughly about the same time; this way they will be more tarnished and the pennies will have similar composition. 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Dont be afraid to use all your senses. Cover the pennies with taco sauce, spreading the sauce over the pennies until they are completely covered. They are going to love it! Observe paper clips next day. One of my daughters thought that the pennies would get dissolved while my other daughter thought the soda would make the pennies dirtier. This one is exciting, low prep, and engaging. Im going to use this for my science project at school but im going to do it for more then 10 minutes. 20-30 dull pennies 1/4 cup white vinegar (dilute acetic acid) 1 teaspoon salt (NaCl) 1 shallow, clear glass or plastic bowl (not metal) 1-2 clean steel screws or nails water measuring spoons paper towels Shiny Clean Pennies Pour the salt and vinegar into the bowl. Its exactly the same reaction thats happening to the dearly beloved Statue of Liberty! Take the pennies out one at a time and, keeping track of which penny is which, rinse each one off. Take the penny from the Ketchup,1 minutes square of your table, and place it in the Ketchup 1 cup. Note: Some of the links on this page are affiliate links. A teacher's notes page explains how to use, 50-IN-1 BUNDLE (Set 1 of 1) - Grades 4,5,6, What is in this '50-IN-1 BUNDLE'? But sometimes those pennies you see on the ground look anything but lucky. Place your 'Control, 1 minutes' penny into the 'Control 1' cup. Can you clearly see the date on the penny, or is it too dirty? This is a weak acid, which is good since we ingest it. I used this experiment for my science class and my teacher was super impressed. Leave the paper clip in the solution overnight. Wait at least two minutes before rinsing the pennies. Try other materials containing small amounts of acid to see which produces the best results. Kids will get all the supplies they need to complete the activities in addition to a cool lab book .Subscribe here. Rinse and dry the penny. You might be surprised at how well the ketchup cleaned the penny. Look how much cleaner it is. Chemical reactions, acidity, copper oxidation. Which penny is the cleanest, compared to its before picture? Rank your solutions from which cleaned the penny the best, to which cleaned it the worst. While the coins are air drying in the second stage, you can talk your kids through their findings of the first stage together! Keep trying, keep asking why, and keep learning. None of our pennies were dull anymore, and some were downright shiny! i need to know!!! Smell), Science Fair Project For Kids: Demonstrating How Plants Help Stop Soil Erosion, 10 Great Inventors Books To Inspire Young Children, DIY Bath Bomb for Kids Fun Science Experiments For Kids, Best Books To Get Your Kids to Fall in Love With Math Teach Approved, 5 old copper pennies (these coins need to be copper for this experiment to work), 5 strips of paper (for labelling each penny), A pen and paper for jotting down the results, 5 different liquids to use to clean your pennies. So we proceeded to read the other ingredients and guess what we found? This is a pretty safe experiment. Wash your hands. The vinegar + salt mixture and the ketchup will have come out as the clear winners. Yes, thats right. Follow us on Facebook, Twitter or Instagramto see new experiments! Stage 1: First, prepare all your cups and line them up. That is why old coins look, well, old and new coins are bright and shiny. They react to form copper oxide, which is darker in color. ), and then explain why the salt and vinegar is the winner (sorry to give it awa, enrichment project during our money unit. But somewhere along the way, those pennies lose their luster. How did this happen? Your email address will not be published. Put a dollop of ketchup on a plate. While the coins are submerged in the cups, lay out some paper towels or kitchen paper and label each towel so you know which coin is going where. Then write and draw your observations. Tomatoes contain naturally occurring citric acid, another acid that is generally slightly weaker than vinegar or lemon juice. Start with the cups labeled 1. What do you notice about each penny? The pennies will be cleaner and brighter than before. The acids (usually vinegar - acetic acid) break the copper oxide free from the penny. Seven Layer Density Column Science Experiment, Exploding Popsicle Stick Bomb Tutorial An Energy Experiment For Kids. Not only will you be improving them as an individual, you will also be strengthening the bond you share together. But still fun expiriment!! Continue observations. This bluish-green color is called Malachite. But heres the question that Im sure is brewing in your mind. Get rid of dirt, oil, rust, and debris with a regular garage floor cleaning and maintenance routine. Well, after you wash the ketchup off, that is. Again, make sure the penny is completely covered by Ketchup. Compare the 1 minute and 5 minute pennies in each row. After several minutes . In this activity were going to explore why pennies dont stay bright and shiny, and test different methods to bring the shine back! Deidre is an avid writer with a Bachelor of Arts in Literature. Vinegar (or Lemon Juice) and Salt This method is the best way to clean your pennies, and it will produce a very bright orangey-copper color on your pennies. Its acid! The child should be prepared to discuss why they think some solutions were more effective than others. You have students write a hypothesis for what they think will happen in each solution and then let them soak. So when the coin stays in your pocket or is passed from person to person or stays in that container where you keep all your pennies, the copper in the coin reacts with the oxygen in the air and turns into what is called copper oxide. So we did a little experiment to see what would actually happen. For this experiment, you will need dirty pennies, paper towels, 1/4 cup of white vinegar, a tsp. When you are done with this fun experiment, check outMaking Pennies Green. Gently wipe off any excess solution with a paper towel. I'm a mom of three and STEM enthusiast. But what about the ketchup? Make your own mix of vinegar and salt at different concentrations. Do you notice any changes in the appearance of the pennies? i thought that this was very helpful all five of my kids did this and they got an A so yea, gunna use this for my science project at school:D, well i think this experiment was welled organized but it could have showed more steps in the process of how they started from beginning to end also it could have said how long did it sit in the liquid, did they whip it off or not, showed what color was the coin at first etc, This is a great experiment im in 7th grade my science teacher was shocked. Before you start, its important to take note that for this cleaning coins experiment to work, you need coins made of copper; otherwise, this will not work. Copper oxide is blackish. (we used our hands very messy business especially with the catsup but the kids thought that was fun!) #sciencegoals (https://www.youtube.com/watch?v=WhAgQEr1LOE), Top 20 Musical Toys for Babies Under 6 Months, Best Guide On How To Encourage Motor Development In Babies, Science Fair Ideas for Kids: Manipulating Gases with Balloons, Science Fair For Kids: The Battle of the Senses (Taste vs. This is what the pennies look like sitting at the bottom of the glass. The soda cleans the pennies because it contains phosphoric acid. Begin your control experiment. My kids had fun doing this, raiding their piggy banks to find some dirty pennies. We would recommend you use any liquids from the following list for the best results: Now, you can get to the fun part carrying out the experiment! The chemical reaction that dissolves the copper oxide on your pennies is an ongoing process. If you have dirty, dull, or green pennies lying around, try the cleaning pennies science experiment to turn them bright again! This means you will only have two cups to work with. *Note: This activity works best if you use 10 pennies that are equally dirty. Penny cleaning science projects are a popular choice at grade school science fairs - and for good reason. Let the pennies sit in the soda overnight. Science: Project Cleaning Pennies Question: What products clean pennies the best? 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First, prepare all your cups and line them up on a counter. The pennies will be cleaner and brighter than before. Make three signs that say "Tomato Paste + Vinegar," "Salt + Vinegar," and "Tomato Paste + Salt.". Wear safety goggles to avoid splash danger. This is easy for the water and other thin liquids, but for ketchup or mustard, you need to flip the penny around to be sure it is coated. Step 2: Dip one penny halfway into the liquid. of salt and a bowl, preferably metal. There are two different stages to this Science activity. Science - Lesson 5 of 50 - Grades 4,5,6 Which one is still the dirtiest? This post contains affiliate links. Place a penny in it and cover the penny with ketchup. Encourage this and get them to write down their supposed answers. Extra: Test whether these cleaning solutions work on other types of coins. Pennies rust overtime. If using bowls or Tupperware, write your label on clear plastic tape and gently attach it. Update Includes Google Slides version for distance learning, Rated 4.77 out of 5, based on 172 reviews, " is a product that provides a fun and educational activity for children and adults alike. The statue ismade of copper and it has turned bluish-green because of this copper-oxygen-chlorine reaction. Wipe the penny off with a paper towel and rinse off. Pop another coin in both the ketchup and vinegar and salt mixture. Using the tape and marker, label each dish or cup with the name of the solution that will go into it. I have included 4 recording sheets to go along. Hi, I'm Kim! Do not add anything to the cup. This outlines all of the steps of scientific investigation. Copper oxide is what causes pennies to become dull. Includes a 2-page student workshe, your class, whether on Presidents Day or another time of the year! Penny Lab webapi.bu.edu 2022-10-29 . While still scrubbing with the toothbrush, rinse the penny with room temperature water.
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