First, prepare all your cups and line them up on a counter. The vinegar cleans the penny due to the acid in the vinegar. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this. that is nice sure for kids. It can be done relatively quickly and with multiple ages. Reproduction of material from this website without written permission is strictly prohibited. The liquids didnt clean the coins in 10 minutes so I think it needed to be for longer! Get your copper coins out of the containers where theyve been hiding for many years and get them cleaned. You can actually do lots of simple science experiments at home with just a few basic supplies. You can only guess how highly acidic this ketchup must be! As an Amazon Associate I earn from qualifying purchases. And also, dont forget to Subscribe to our channel for more fun kids activities. Washing the pennies in a vinegar and salt solution removes the patina from the pennies, exposing the brighter copper underneath once more. The salt helps speed up the reaction. 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. And be sure to share these additional fun learning activities with your kids! 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. Keep trying, keep asking why, and keep learning. Take the dirty copper pennies (the ones from the bottom of your purse are best) and have your child place one into each cup. Salt! The salt and acetic acid in vinegar do the trick. The chemistry behind the experiment is simple yet interesting, and the project is easy for children of all ages to do. When the Statue of Liberty was originally built in 1875, it was not the same blue-green color it is today. However, in each case, the cleaning method that worked best for you is the one that has the highest concentration of acid. Whether you need help solving quadratic equations, inspiration for the upcoming science fair or the latest update on a major storm, Sciencing is here to help. Recently, we did thisCleaning Pennies Experimentand the results were surprising to my kids. Pencil EraserUse a common pencil eraser on your pennies to remove the oxides like mistakes on paper. One of my daughters thought that the pennies would get dissolved while my other daughter thought the soda would make the pennies dirtier. Which method works best is determined by the amount of acid present, and the presence of salt. Then, you should have more acidic solutions like ketchup and the salt and vinegar mixture. 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. If you continue to use this site we will assume that you are happy with it. Today is the day you take out your old coins and declare this day, coin cleaning day. Find out! Which one do they think will clean the coin the most? Place each of the pennies in the 1 minute column into their corresponding cup. This is because copper reacts to oxygen in the air and it turns into a compound called copper oxide. All you need is a couple of old copper coins, some different liquids and a few other tools. Who knew learning how to clean a penny could be so much fun? 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). 2. follow up activities, 10 graphing activities for graphing the hypothesis. How do they feel? method. Oranges? Use your paper towels to gently dry off each penny, then place it in the corresponding square of your table. 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. 2002-2023 LoveToKnow Media. Record your results; photographs are helpful. Hot Sauce Hot sauce, like Tabasco or taco sauce, also will remove the oxides off pennies. 12-Page Colour Download: Privacy. 'Elephant's Toothpaste, ' link: Lesson contains Science: Project Cleaning Pennies Question: What products clean pennies the best? Kids will get all the supplies they need to complete the activities in addition to a cool lab book .Subscribe here. Place a penny in it and cover the penny with ketchup. The salt and acetic acid in vinegar do the trick. To begin with, you'll want to find a handful of dirty pennies. Wipe the penny off with a paper towel and rinse off. Curious about the science? 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. Pour a small amount of each solution you chose into a cup. This will help them to get thinking about the subject and soon, they will start to come up with their own questions. Rank your solutions from which cleaned the penny the best, to which cleaned it the worst. Once they are clean place them on the towels you laid out in front of the cups. Remove the pennies and rinse them with water. Why did the catsup clean the coin as well as the vinegar + salt solution? First, prepare all your cups and line them up. The Salt And Vinegar Method. The negatively charged oxygen atoms in our air are attracted to the positively charged copper atoms in the penny. Gently wipe off any excess solution with a paper towel. Hot SauceHot sauce, like Tabasco or taco sauce, also will remove the oxides off pennies. After several minutes . Which one is the cleanest? Cleaning Pennies Science Experiment for Kids. The pennies will be cleaner and brighter than before. And what is vinegar? Step by Step Procedure: There are two different stages to this Science activity. 'Balloon Powered Rocket, ' link: Why is that? Make sure you stay with your kids during this part and engage with them. Once the budding scientist has a pile of pennies, he or she should choose and collect their selection of cleaning solutions. Before we started our cleaning pennies experiment, I talked to my kids about what they thought would happen when we placed pennies into some soda. 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. 'Dry Ice Bubble, ' link: When the penny is clean, remove it, rinse it with fresh water, and set it aside to dry. Easy for planning and implementing, and the students love it. TOTAL PAGES AVAILABLE FOR, 10-IN-1 BUNDLE (Set 1 of 5) - Grades 4,5,6, What is in this '10-IN-1 BUNDLE'? Take the pennies out one at a time and, keeping track of which penny is which, rinse each one off. Science - Lesson 6 of 50 - Grades 4,5,6, my middle school special education classroom. Penny Cleaning Science Fair Project for Eighth-Graders Finally, after about 30 minutes to 1 hour, look at the coins again. What happened to the coins when air dried? Let the pennies soak for a little bit. Notify me of follow-up comments by email. Answers to, Questions: 1 colour page Check it out. And hydrochloric acid is so much more acidic than vinegar alone. And don't worry, I give the science behind it all! ), and then explain why the salt and vinegar is the winner (sorry to give it awa, enrichment project during our money unit. 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. And it even had added acetic acid! 12-Page Black & White Download In this lesson, the students will predict why some. Based in Los Angeles, Bridgett Michele Lawrence began working as a freelance writer in 2008. . The 25 Best Wooden Puzzles for Toddlers (Teacher Approved! Place your Control, 1 minutes penny into the Control 1 cup. Dry the pennies with a paper towel. Do not add anything to the cup. What about soda? We're going to try this out today! You can dispose of any extra ketchup how you normally would. By continuing to use the site, you agree to the use of cookies. If you are in a hurry these two cups can be enough, but more solutions are better to give a full picture of what is happening. 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. My goal is to ease the burdens of educators by offering memorable learning activities. How to Quickly Clean Velcro & Make It Sticky Again, Say so long to fuzzy, fluffy, linty velcro and hello to a satisfying clean velcro strip, Easy Ways to Clean Your Garage Floors & Remove Grime. So for the 2nd stage of this experiment, you will work on these two materials alone. Place a square of clean, white paper towel in front of each cup. In this activity, were going to test a few different methods for cleaning pennies, and determine which gets our pennies the cleanest. The students have to come up, a question, make a hypothesis, conduct an, a conclusion. 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. I'm giving you a shout out on the post. . Science isnt a one and done thing. Different brands of Ketchup and Tabasco or hot sauce will have different amounts of salt and acid in their ingredients, so your results may be different than someone else doing this activity at their house. Try other materials containing small amounts of acid to see which produces the best results. There are two different stages to this Science activity. A chemical reaction between the vinegar and the salt removes copper oxide. Thats great to know Aayeshi. Go back to the table you drew. After all the pennies have soaked for about five minutes, it is time to pull them out. - Lesson 5 of 50 - Grades 4,5,6 Repeat steps 2-8 with the pennies in your 5 minutes column. Science Experiment: How to Clean Pennies - Teach Beside Me Well, after you wash the ketchup off, that is. All you need are, , water, dish soap, salt, and vinegar. 'Balloon Powered Rocket, - Lesson 2 of 50 - Grades 4,5,6 Lesson Cover: 1 colour page 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. Carefully remove each penny from its solution. Which one is still the dirtiest? Slowly add water, 1 tablespoon at time, until youve created a paste. Pennies rust overtime. Tomatoes contain naturally occurring citric acid, another acid that is generally slightly weaker than vinegar or lemon juice. Repeat step 4 two more times. This is a great activity for using just exploring and giving open-ended questioning. chemistry, kitchen science experiments, coin experiments. I'm a teacher, currently doing distance learning with my students during the school closure and I'm going to use your activity for our Weekly STEM Challenge! Your email address will not be published. Trust me on this. You don't have to do the 2nd one, but it's also a good scientific experiment and you'll even find out why the Statue of Liberty is the color that it is. Simple, any age students! But somewhere along the way, those pennies lose their luster. Continue observations. Salt and vinegar mixed together creates a chemical reaction to form hydrochloric acid, which is far more acidic than vinegar alone. 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. To begin, the experimenter and supervising adult should plan out which solutions they have access to and can use to test their penny-cleaning capabilities. 'Fun, ' link: Penny lab experiment conclusion. The project above is a DEMONSTRATION. Two student printables are included for recording and responding to the lesson. 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. Leave the coins to air dry for at least 30 minutes. 'Balloon Powered Rocket, that looks at what house hold solutions will be best to. Why do you think this might be? Add highlights, virtual manipulatives, and more. And it actually has a lot of practical life lessons wrapped up in it. Put 1 tablespoon Ketchup into each Ketchup cup. Could you have cleaner pennies if you just used running water? From Dull to Dazzling: Using Pennies to Test How pH - Science Buddies Chemistry Experiments With Pennies - ThoughtCo When experimenting with how to clean pennies, we tested a variety of items, here are some ideas: Lemon or lime juice Water Soy sauce Dish soap White vinegar Ginger ale Ketchup Salt water Hot Sauce Mustard Milk Baking soda (we did not try this, but it would be a good option to add in!) 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! And so, these two liquids are the most acidic and therefore, the best coin cleaners! In this case, talk with the young scientist about which solutions he or she thinks will best clean the pennies. Vinegar and lemon juice are both acids. Dry the pennies with a paper towel. 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. If you have older kids, you can let them pour the soda. Pennies turn dull and green due to oxidation. Kids will love trying their hand at the classic cleaning pennies science experiment to see if theycan use a chemical reaction to make pennies shine brightly once again. Test whether these cleaning solutions work on other types of coins. 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. But heres the question that Im sure is brewing in your mind. Also, Copper oxide easily dissolves in acid. 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. 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'? Step 4: Which penny is the cleanest, compared to its before picture? Take a few minutes to examine your chosen solutions. They look brown or black, and sometimes theyre so dirty looking that you cant even tell whether theyre pennies! Citrus JuiceTry a variety of citrus juices to see which works best or simply let your pennies soak in lemon juice. Science - Lesson 2 of 50 - Grades 4,5,6 Isnt that amazing? Kindergarten Math Practice with the Zap Zap Math App, Falling Unexpectedly in Love With Homeschooling My Gifted Child, Disclosure Policy & Copyright Information. Explore this article things needed 1 Preparation 2 Collect pennies of varying color Collect pennies of varying color. Put 1 tablespoon of Lemon Juice and 1 teaspoon of salt into each Lemon cup. Coke contains phosphoric acid that cleans the oxides. After the 10 minutes have passed, use the tweezers to take the coins out of each cup. Use your permanent marker to label your remaining plastic cups like this: Ketchup 1, Ketchup 5, Tabasco 1, Tabasco 5, Vinegar 1, Vinegar 5, Lemon 1, Lemon 5, Control 1, Control 5. If this experiment is being used for a science fair or class presentation, the young scientist has the option to either take photos of each penny with a label for which solution was used or even to bring the pennies themselves in. I attached a "rainbow" of, glue dots, and passed it around the room. The oxygen in the air and the copper in the pennies form an oxide that coats the pennies and makes them look dirty. This means you will only have two cups to work with. They are going to love it! 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. Now comes the hardest part of the experiment - the waiting. About half way filled is fine. The ketchup is most likely what will surprise your kids the most (and lets be honest perhaps you too!). Our goal is to make science relevant and fun for everyone. It utilizes a lot of stuff you already have lying around your house, and does not require you to go out and buy a lot of fancy science gadgets. I use this specifically to teach them the. What works best to do this is an acid combined with salt. Create a solution of vinegar and salt using one teaspoon of salt and 1/4 of a cup of vinegar. When 1 minute 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!). Always happy to help! For this experiment, you will need dirty pennies, paper towels, 1/4 cup of white vinegar, a tsp. Add the salt, and stir until the salt is completely dissolved. 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. What happens? We had a blast, a physical example of chemical weathering, by looking at how the soda coke (or a generic version), . Salt is also a key ingredient in the other cleaning agents, thus making them effective in cleaning the pennies. This is what the pennies look like sitting at the bottom of the glass. Not only will this, Use this observation handout when experimenting. Once you have completed the process dont be afraid to go back and work through it again. Acids vs. Bases: Cleaning Pennies Experiment - Scientific AmeriKen You have students write a hypothesis for what they think will happen in each solution and then let them soak. Leave the control cups empty. Rinse and dry the penny. Cleaning pennies with ketchup: easy and fun STEM for kids. Citric acid works similarly to the other acids. Avoid unsightly marks and scratches by learning how to clean sunglasses the right way.
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