Citrus JuiceTry a variety of citrus juices to see which works best or simply let your pennies soak in lemon juice. Its not just dependent on how old the pennies are. 4. The pennies get shiny because the copper oxide is being stripped off by a reaction, which results in increasing levels of copper in the liquid. Label this column "Cleaning Method." The next column, label "1 Minute." And label the third column "5 Minutes." Make each cell (square) of the table large enough to place your penny in it after. You also may have noticed that the longer the pennies stayed in the cleaning solution, the cleaner they became! 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. we do during the week of Presidents' Day or when we are talking about coins in Math. Just put the coins on the tea towel and leave it to air dry. Put 1 tablespoon of Vinegar and 1 teaspoon of salt into each Vinegar cup. A great way to do this is by doing fun science experiments with your kid at home. For this experiment, you will need dirty pennies, paper towels, 1/4 cup of white vinegar, a tsp. Cover the pennies with each of the mixtures, smear them around with your fingers, and give the ingredients at least 2 minutes to react. I have included 4 recording sheets to go along. 'Dry Ice Bubble, ' link: However, over time, they turn dull and dark. Step by Step Procedure: There are two different stages to this Science activity. Copyright 2002-2023 Science Buddies. If you're cleaning metals like copper or brass with lemon juice over the long term, this can react with the metals and can cause corrosion, damaging the metal. The oxygen in the air and the copper in the pennies form an oxide that coats the pennies and makes them look dirty. Note: Some of the links on this page are affiliate links. But still fun expiriment!! From Dull to Dazzling: Using Pennies to Test How pH Affects Copper Corrosion, Rustin Out: How Acids Affect the Rate of Corrosion, ! 2 teaspoons salt. Therefore, acids are the best kind of liquid to use to clean coins as it easily dissolves the copper oxide that coats old coins and makes them look new and shiny again. Keep it out of reach with a note to be sure no one drinks the soda. 1. In the third cup, put 1/2 cup vinegar and 2 teaspoons of salt. And it even had added acetic acid! Label each cup with a pen so you and your kids know what liquid is in each up. Well, its time to look at what is in our catsup! Younger kids who cant yet write well can keep the pennies in front of the cups.). Children often think the soapy water will work best as it is normally used for cleaning, but children who understand what acids are or who know a little about chemistry may have a better idea about what will work. 'Elephant's Toothpaste, - Lesson 4 of 50 - Grades 4,5,6 Make three signs that say "Tomato Paste + Vinegar," "Salt + Vinegar," and "Tomato Paste + Salt.". Chemical reactions, acidity, copper oxidation. I know I was. Leave the coins in the liquid for 10 minutes. Step 2: Dip one penny halfway into the liquid. Pennies are obviously made of copper, and they start out bright and shiny when they are new. Washing the pennies in a vinegar and salt solution removes the patina from the pennies, exposing the brighter copper underneath once more. When the vinegar cleaned the coin, it stripped away the coating and exposed the copper. This means you will only have two cups to work with. From Dull to Dazzling: Using Pennies to Test How pH - Science Buddies You need just a few things for this experiment: Create a solution of vinegar and salt using one teaspoon of salt and 1/4 of a cup of vinegar. One of the best things about this experiment is that it does not cost a lot to set up in terms of materials. Lesson and Program Overview: 2 colour pages ), 2 tablespoons freshly squeezed Lemon Juice, 2 tablespoons Tabasco Sauce (or other hot sauce), 11 plastic cups (small Tupperware containers or bowls will work as well). 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Making an hypothesis is easy its basically asking a question! This one is exciting, low prep, and engaging. Once they are clean place them on the towels you laid out in front of the cups. 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. Which penny is the cleanest, compared to the control? Step 1 Fill a glass cup with vinegar and pour it in a non-metallic bowl. Most of the liquids (except the water) should have somewhat cleaned the coin. Citric acid works similarly to the other acids. Have your kids write down their findings on their piece of paper ready to summarize their findings and talk through the explanation. Later when you have your results, you will be able to look back on what they have written down and compare their results to their initial answers. The vinegar removed some of the copper from the pennies, if there is enough copper in the vinegar, the copper will become attracted by to the metal in the nuts and bolts and they will take on a new copper color - cool. 2002-2023 LoveToKnow Media. Repeat the process until the penny reaches the desired shininess. If youre doing this with kids, this is a good time to ask them questions about the experiment. Vinegar and lemon juice are both acids. Its that dull dark. Pop another coin in both the ketchup and vinegar and salt mixture. Science: Project Cleaning Pennies Question: What products clean pennies the best? But what about the ketchup? Make this your own and let your kids explore. Fill the eyedropper with water from the water beaker and carefully count the number of drops that fit on the penny until the water spills over the edge. Let the pennies soak for a little bit. Why did the catsup clean the coin as well as the vinegar + salt solution? . 2. (Optional) Dip one piece of pH paper in each solution (it turns more blue for basic liquids and more red for acidic ones), let it dry, and label which liquid it was dipped in. Cleaning Penny Experiment Teaching Resources | Teachers Pay Teachers Learn how your comment data is processed. Kids are naturally curious, and as their parent or guardian, you will want to encourage that as they grow older. Ketchup Soak your pennies in ketchup to clean them like new. Cleaning Coins Experiment [Procedure And Explanation] 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. Thats great to know Aayeshi. My kids had fun doing this, raiding their piggy banks to find some dirty pennies. You can find this page online at: https://www.sciencebuddies.org/stem-activities/shine-bright-like-apenny. When you are done with this fun experiment, check outMaking Pennies Green. The following titles name the 20, /activities.Shake It! You simply place a, in three types of solutions, I chose water, soap/water, and salt/vinegar but you can change the solutions if you like (the sheet is editable). This experiment can be performed with things generally found around the house, so it's a great choice for even a quick rainy day project. If you took a picture in Step 1, go back and compare each pennys cleanliness before and after being cleaned. Why or why not? Step 1: Put the salt and vinegar in the bowl. Aplus Education Ltd with Vaughan M Blaney, Students love to collect and bring in a dirty, it and why using the scientific method! I attached a "rainbow" of, glue dots, and passed it around the room. The Best Science Kits for 5 Year Olds That Teach STEM in a Fun Way, The Best Science Kits for 4 Year Olds That Teach Basic Science Concepts Really Well, The Best Science Kits for 3 Year Olds (What to Buy and What to Avoid), The Best Gifts For 10 Year Old Girls Who Are Awesome and Ready to Change the World, Best Science Kits For 8-Year-Olds to 10-Year-Olds, Water Pressure Rocket Toy: 4M Water Rocket Kit Review. For cleaning up, I used a variety of materials such as lemon, vinegar and salt, water, water with soap. Add the salt, and stir until the salt is completely dissolved. This will allow you to make a better judgment of how well each method cleaned, by looking at the pennies before and after their treatment. All you need for this science experiment are vinegar, salt, a glass jar, and dirty pennies.1. The salt and acetic acid in vinegar do the trick. Place your pennies in a shallow bowl, and cover them with lemon juice. DIY | Penny Cleaning Experiments | Playvolution HQ Drop eight to ten of the dirty pennies into the solution. You can dispose of any extra ketchup how you normally would. Well, after you wash the ketchup off, that is. This bluish-green color is called Malachite. 3 clear cups. As an Amazon Associate I earn from qualifying purchases. it does not say the date and author on the website! Remember that at the very start, I said you should use only copper coins? The pennies will be cleaner and brighter than before. ', ' link: of salt and a bowl, preferably metal. And because this mixture is way up high in the acidic scale, it cleaned the coin so much better and quicker than just vinegar. Copyright 2023 Team Cartwright | Wisteria on Trellis Framework by Mediavine, Having Twins is No Excuse! Cover the pennies with taco sauce, spreading the sauce over the pennies until they are completely covered. Taco Sauce Penny Cleaner - Steve Spangler I believe learning should be enjoyable and engaging. 'Dry Ice Bubble, - Lesson 3 of 50 - Grades 4,5,6 'Balloon Powered Rocket, that looks at what house hold solutions will be best to. by Brenda Priddy | Jul 12, 2017 | Homeschool |. After a few minutes, remove the pennies from the bowl, and rinse them with water. Finally, wipe the coins dry with a tea towel or kitchen paper. The reason why ketchup is such a good coin cleaner is because it is made from tomatoes, and tomatoes are an acidic vegetable (yes, tomatoes are a vegetable). Read this: Life Lessons from the Scientific Method.). Cleaning With Lemon Experiment | Science project - Education And the best example of this reaction is the Statue of Liberty. You should have observed that each cleaning method made the pennies cleaner, but some methods may have been more successful than others. *Note: This activity works best if you use 10 pennies that are equally dirty. Just click on the image to find more science fun. 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. When the oxygen and the copper on the coins' outsides interact, a substance called copper oxide is formed. Learn how to wash Rothy's shoes so your go-to flats and loafers always look their best. 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. Put 1 tablespoon Ketchup into each Ketchup cup. So for the 2nd stage of this experiment, you will work on these two materials alone. This will help them develop into highly skilled individuals and prepare them for more difficult situations they are sure to encounter later on in life. Check the coins, then come back again in another 30 minutes and see what has happened to the coins. Oxygen in the atmosphere has a negative charge that is attracted to the positive charge of the copper in the penny. Dont be afraid to use all your senses. Science Activity: Turn Old Pennies Bright and Shiny! | Exploratorium It also benefits your kid in a lot of ways too. First, prepare all your cups and line them up. 3. You should have at least five different liquids ready to pour into each individual cup, but you can always add some more for fun. The lab instructions are easy to follow and provide step-by-step guidance on how to conduct the, 5-IN-1 BUNDLE (Set 1 of 10) - Grades 4,5,6, What is in this '5-IN-1 BUNDLE'? Your kids will love this simple chemistry experiment. (we used our hands very messy business especially with the catsup but the kids thought that was fun!) You are going to challenge your children to clean pennies with various kitchen condiments. Step 3: Dump all the pennies into the liquid. We are actually performing a chemical reaction that breaks down the copper oxide. Simple, any age students! Place a penny on each square of your table, heads side up. Once there's a working hypothesis, the experiment itself can begin. TOTAL PAGES AVAILABLE FOR, 10-IN-1 BUNDLE (Set 1 of 5) - Grades 4,5,6, What is in this '10-IN-1 BUNDLE'? Wipe the coins dry with their paper towels and compare them. from Science Buddies http://www.sciencebuddies.org/science-activities. Wait at least two minutes before rinsing the pennies. While the coins are air drying in the second stage, you can talk your kids through their findings of the first stage together! Which penny is the cleanest, compared to its before picture? 2 or More Additional Solutions. Be sure to include one water cup as a control and one ketchup cup. Its that dull dark color that coats old coins. Be sure the penny is coated in whatever solution is in that cup. 'Fire Water Balloon, 25-IN-1 BUNDLE (Set 1 of 2) - Grades 4,5,6, What is in this '25-IN-1 BUNDLE'? There is a second stage to this experiment that you can also try out while you are talking to your kids about their results from the first stage. But sometimes those pennies you see on the ground look anything but lucky. Yes, thats right. And be sure to share these additional fun learning activities with your kids! Sometimes, all you need is some glue, some baking soda or a few old pennies. We are going to put the coins into different liquids, which of these liquids do you think will clean them? Copper oxide is the dull dark color that covers old coins the older a copper coin is, the more copper oxide it has coating its surface. Teachers- the materials are readily available! This is because when the hydrochloric solution cleaned the coin and air dried it, it also took with it some of the salt. Do you notice any changes in the contents of the cups is anything bubbling, or changing color? Problem & Hypothesis - Cleaning Copper Pennies - Google Sites As in ketchup, salt and vinegar are both in hot sauce. Repeat steps 2-8 with the pennies in your 5 minutes column. Which is the least clean? Place your 'Control, 1 minutes' penny into the 'Control 1' cup. The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. Keep the pennies in the cup. A variety of products can be used to keep your pennies looking shiny and new. My goal is to encourage moms, find practical parenting solutions, and help moms with the unique challenges twins bring! Teaching kids about science doesn't have to be intimidating. To remove this tarnish, an acid needs to be used to weaken the bonds between the copper and oxygen atoms. Mix one tablespoon of salt with half a cup of vinegar in a small container and stir until the salt dissolves. 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. Put one penny in each of the liquids and make sure it's fully submerged. KetchupSoak your pennies in ketchup to clean them like new. CokeCoke and off-brand colas will quickly remove the tarnish. Begin by pouring the vinegar into the bowl. What about soda? The step-by-step instructions included in this digital product are easy to follow and are accompanied by colorful illustrations that make the process even more engaging. Answers to, Questions: 1 colour page The statue ismade of copper and it has turned bluish-green because of this copper-oxygen-chlorine reaction. This is your control. Chemistry Experiments With Pennies - ThoughtCo Can you clearly see Abraham Lincoln? 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. The classic coin cleaning experiment is an easy and affordable way to get your kids interested in science. Science - Lesson 6 of 50 - Grades 4,5,6, my middle school special education classroom. As we have seen experimentally, acid alone does not clean as well as acid and salt. Wipe the penny off with a paper towel and rinse off. Have additional paper towels available to wipe off any remaining solution from the pennies. Copper oxide is what causes pennies to become dull. Drop the pennies into the soda. A lot of parents or guardians may initially be switched off to this because they assume you will need fancy kits and equipment but thats not always true. Make sure your child doesn't lick the pennies or try to eat any because ketchup is tasty. Penny Cleaning Experiment Teaching Resources | TPT - TeachersPayTeachers Will using lemon juice and salt have better results than vinegar? So, the results of your kids coin cleaning experiment should be that the ketchup and the vinegar and salt mixture were the best coin cleaners. 9 Easy Grill Cleaning Tips to Keep Mealtime Fresh, At least two of the solutions from the above list, One penny for each solution plus one extra, One small dish or cup for each solution (plastic or paper cups with a couple inches off the top cut off will work if there aren't drinking glasses to spare). After that you won't see anything happen. Once 5 minutes has passed, rinse each cup with water until the inside of the cup and the pennies are clean (be careful not to lose your penny!). Her articles appear on the Sixth Wall and other websites. Continue observations. But, can make them shiny and new again. Shine Bright Like a.Penny! | STEM Activity - Science Buddies Place two equally tarnished pennies on each of three different plates. Thank you for sharing! Your Materials For This Science Experiment & Steps Combined. Science - Lesson 3 of 50 - Grades 4,5,6 What about soda? Gently swirl the cup so that the penny is completely covered with Ketchup. After quite some time, or after exposure to an acid, pennies will formcopper sulfate, carbonate, and chloride salts, which gives pennies a green color. . Plus, there is another great reason to try this science experiment out youll be spending some quality time with your kids. But heres the question that Im sure is brewing in your mind. If you are doing this with older children who can write you can have them write out a grid for penny comparison. Hi, my name is Elena Jones, and my full-time job is a teacher. 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. Did you get to the same conclusion that the ketchup and the vinegar + salt mixture cleaned the coins the most? 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. As in ketchup, salt and vinegar . Through a penny cleaning science project, you can study atoms, chemical changes and observing processes through the scientific method, all of which are science lesson benchmarks for eighth grade. Put 1 tablespoon of Lemon Juice and 1 teaspoon of salt into each Lemon cup. If you enjoyed this cleaning pennies experiment, you'll love: Wow! Then, you should have more acidic solutions like ketchup and the salt and vinegar mixture. For any other use, please contact Science Buddies. Place a paper clip in each cup of vinegar and salt solution.

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