pennies cleaning science experiment conclusion

If you are doing this with older children who can write you can have them write out a grid for penny comparison. Next, pour one liquid into each cup. From Dull to Dazzling: Using Pennies to Test How pH Affects Copper Corrosion, Rustin Out: How Acids Affect the Rate of Corrosion, ! And the best example of this reaction is the Statue of Liberty. I'm giving you a shout out on the post. 2. So if you look at the coin in the vinegar solution, it made the old coin a little bit brighter and less brown. All pennies start out the same color beautiful and bright copper. Here is a video of when we did the first stage of this experiment which we put up on our GallyKids Youtube Channel. You simply add salt to vinegar and you end up making an even more acidic concoction? Clean Pennies - Utah Education Network Start with the cups labeled 1. First, prepare all your cups and line them up. Repeat the experiment with the same pennies in a new solution of vinegar and salt and see if you can make them even brighter! Reviewed & Fact Checked byRebecca Carlock. I attached a "rainbow" of, glue dots, and passed it around the room. 1. Leaving your pennies in the cleaning solution longer gives the reaction more time to continue, and gives you shinier pennies! Thanks for the rare idea to wash penny. The answer is pretty simple before 1982, pennies were made almost entirely from copper, and modern pennies are made of copper-plated zinc. Thats Chemistry in action for you! Examples: Vinegar, Coke, Mustard, Mayo, Juice, Milk, Lemon Juice, etc. Great for President's Day! I know I was. Put one penny in each of the liquids and make sure it's fully submerged. ), 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). It also helps them practice graphing, determining independent and dependent variables, and analyzing experimental results. This one is exciting, low prep, and engaging. You can read more on the science behind how to clean pennies here: Clean your pennies with ketchup! Students should also be able to identify if this change is chemical or physical. If youre doing this with kids, this is a good time to ask them questions about the experiment. The friction does the work. 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. Put 1 tablespoon of Lemon Juice and 1 teaspoon of salt into each Lemon cup. Now, when copper reacts to oxygen, it turns dark brown to make copper oxide. There are two different stages to this Science activity. Plus, theyll learn some cool facts about metals, the pH scale, and the Statue of Liberty. In the first cup, put plain water. Science: Project Cleaning Pennies Question: What products clean pennies the best? After all the pennies have soaked for about five minutes, it is time to pull them out. That is why old coins look, well, old and new coins are bright and shiny. Penny lab experiment conclusion. Cleaning Pennies Science Experiment (Keeping the pennies in front of the cups will help you remember which solution they were each in. Write the name of each liquid on a strip of paper and put one strip beside the cup to mark it. Learn how to wash Rothy's shoes so your go-to flats and loafers always look their best. Curious about the science? 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. Trust me on this. It is a great sensory STEM activity for preschoolers and older children. If you dont have a camera, look closely at the color of each penny. Try more solutions. of salt and a bowl, preferably metal. In fact, new pennies are so pretty that its considered a compliment to say that something is as shiny as a new penny. Thanks a lot Meriley. Water from the tap is fine. Kids are given some background on chemical reactions and oxidation. What about soda? Teaching kids about science doesn't have to be intimidating. She's worked as a freelance copywriter and fiction writer for over a decade. 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. I'm so glad you liked it! Conclusions - Cleaning Pennies Cleaning Pennies Home The project that I made, consisted in cleaning up old and dirty pennies. 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. Remember that copper turns dark brown when reacting with oxygen? Its a great way to get their young minds critically thinking, and also challenges them to solve problems using logic. Your email address will not be published. For this experiment, you will need dirty pennies, paper towels, 1/4 cup of white vinegar, a tsp. If you are looking for an easy way to engage your kids with science, then why dont you try out the classic cleaning coins experiment? Well try and put up the next stage soon. This looks like a great activity to do with my kiddos! Water is the worst because it is a neutral liquid, meaning that it sits smack in the middle of the pH scale. You also may have noticed that the longer the pennies stayed in the cleaning solution, the cleaner they became! Place each of the pennies in the 1 minute column into their corresponding cup. Ketchup and oranges have a high acid content as dovinegar and lemons. Copyright 2002-2023 Science Buddies. After a few minutes, remove the pennies from the bowl, and rinse them with water. TPT empowers educators to teach at their best. Continue observations. This product is designed to teach people how to clean old, tarnished pennies using simple household items such as vinegar and salt. Not only will this, Use this observation handout when experimenting. Leave the coins in the liquid for 10 minutes. Put a dollop of ketchup on a plate. I used this experiment for my science class and my teacher was super impressed. 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! Lesson contains Teachers- the materials are readily available! Isnt that amazing? In this lesson, the students will predict why some. You see, copper coins are usually shiny and well, copper-colored. 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. Set one penny aside to act as your control. 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. Encourage this and get them to write down their supposed answers. This lab activity aims to explore the concept of surface tension by examining the amount of water that can fit on the surface of a, without overflowing.The lab activity comes, , an eyedropper, and water. When you add chlorine in that mix, the color turns bluish-green instead! Who knew learning how to clean a penny could be so much fun? One of my daughters thought that the pennies would get dissolved while my other daughter thought the soda would make the pennies dirtier. Gently wipe off any excess solution with a paper towel. Do you notice any changes in the appearance of the pennies? Repeat steps 2-8 with the pennies in your 5 minutes column. I believe learning should be enjoyable and engaging. Begin by pouring the vinegar into the bowl. 'Elephant's Toothpaste, - Lesson 4 of 50 - Grades 4,5,6 Place a penny in it and cover the penny with ketchup. Put 1 tablespoon Ketchup into each Ketchup cup. This is a pretty safe experiment. In each case, make sure the penny is completely covered by the contents of the cup. 'Balloon Powered Rocket, - Lesson 2 of 50 - Grades 4,5,6 Cleaning Coins Experiment [Procedure And Explanation] - Gally Kids It turns out that when you mix vinegar and salt, a chemical reaction takes place and form what is called hydrochloric acid. 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. Let the pennies soak for a little bit. Leave the paper clip in the solution overnight. 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. Use your paper and pencil to create a table like the one below. Hold it there for about 10 seconds, then pull it out. When the oxygen and the copper on the coins' outsides interact, a substance called copper oxide is formed. Begin your control experiment. 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. Now comes the hardest part of the experiment - the waiting. Experiments on Cleaning Pennies | Sciencing Also, Copper oxide easily dissolves in acid. The statue ismade of copper and it has turned bluish-green because of this copper-oxygen-chlorine reaction. Carefully remove each penny from its solution. You dont need any fancy gadgets or science kits to clean these coins, all you need are a few household ingredients and you will have shiny new coins in less than an hour. Record this number on your data table under trial 1. 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. We are actually performing a chemical reaction that breaks down the copper oxide. So, the acetic acid in vinegar dissolves the copper oxide and cleans it. What is changing? Well, its time to look at what is in our catsup! The acid in ketchup is acetic acid, commonly known as vinegar. If you continue to use this site we will assume that you are happy with it. Your Materials For This Science Experiment & Steps Combined. Its acid! This will help them to get thinking about the subject and soon, they will start to come up with their own questions. And also, dont forget to Subscribe to our channel for more fun kids activities. Her articles appear on the Sixth Wall and other websites. Penny Lab webapi.bu.edu 2022-10-29 . 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. This takes more work than the others, however. As in ketchup, salt and vinegar . They are going to love it! In time, however, they get darker, brownish and dull. Wait about 5 minutes, then remove the pennies from the solution. What will happen when the liquid cleans the coin? 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. I'm a mom of three and STEM enthusiast. Want to wow your kids with some simple kitchen science? Phosphoric acid breaks down the copper oxygen compound and causes a new layer of the copper to be exposed. Leave the control cups empty. Whether you've got toddlers or grandparents to entertain, family nights are the p, Antique Christmas Houses for a Victorian Village Display, From sitting on brick firework mantles to placed underneath genuine fir Christmas trees, people have been displaying their ceramic or plastic holiday town scenes for decades. . 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. Once all the pennies are in the correct cup, use the remaining time to observe the pennies, and the contents of the cup. Check it out. 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). My kids had fun doing this, raiding their piggy banks to find some dirty pennies. Extra: Experiment with even longer periods of time with each of the cleaning methods. Notify me of follow-up comments by email. Science Activity: Turn Old Pennies Bright and Shiny! | Exploratorium Thanks for sharing! When the Statue of Liberty was originally built in 1875, it was not the same blue-green color it is today. Check the coins, then come back again in another 30 minutes and see what has happened to the coins. 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. After quite some time, or after exposure to an acid, pennies will formcopper sulfate, carbonate, and chloride salts, which gives pennies a green color. more information Accept. Remember, you will be working with only the vinegar salt mixture and the catsup. How did this happen? Place a penny on each square of your table, heads side up. After the 10 minutes have passed, use the tweezers to take the coins out of each cup. So in our case, we looked at the ingredients. Make a paste from your baking soda and water. Theres a reason for that. And what is vinegar? Place a paper clip in each cup of vinegar and salt solution. So we did a little experiment to see what would actually happen. Put a dollop of ketchup on a plate. Simple, any age students! Posted on Last updated: July 4, 2021 By: Author Kim. Pennies rust overtime. It is a step-by-step, that the students can perform on their own. 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! Add the pennies. One option is to incorporate the use of pH paper (which measures how basic or acidic something is when the paper is dipped into a substance) to help the child further understand why some of the solutions may work better than others. Begin the experiment by placing a few pennies on a small plate. 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. Penny Cleaning Experiment Teaching Resources | TPT - TeachersPayTeachers 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 child should be prepared to discuss why they think some solutions were more effective than others. Start a 1 minute timer. 2. Pencil EraserUse a common pencil eraser on your pennies to remove the oxides like mistakes on paper. Again, make sure the penny is completely covered by Ketchup. 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!) are shinier than others, learn the meaning of a hypothesis by watching a video (link to website), make a hypothesis, graph their hypothesis, are dull and how they become shiny. The "Penny Cleaning Experiment" is a product that provides a fun and educational activity for children and adults alike.This product is designed to teach people how to clean old, tarnished pennies using simple household items such as vinegar and salt. For a complete clean, flip the pennies over and repeat the process on the other side. After 10 minutes, take the coins out; but this time, dont wipe the coins clean. Wipe the coins dry with their paper towels and compare them. So what just happened here? 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. Remove pennies and place them on a paper towel to dry. 'Dry Ice Bubble, - Lesson 3 of 50 - Grades 4,5,6 The coins that were submerged in those cups should come out nice and shiny, while the rest are still a little dull and dirty. Hi, I'm Kim! I use this specifically to teach them the. This is your control. Hot SauceHot sauce, like Tabasco or taco sauce, also will remove the oxides off pennies. Can you think of other safe household acids you could test? Are you getting the free resources, updates, and special offers we send out every week in our teacher newsletter? Students will practice NGSS skills such as asking questions, planning and carrying out an investigation, and analyzing and interpreting data. Gather up a few dirty pennies. Wash your hands. If you enjoyed this cleaning pennies experiment, you'll love: Wow! Will using lemon juice and salt have better results than vinegar? Place your 'Control, 1 minutes' penny into the 'Control 1' cup. This is a fun and easy STEM activity that introduces the idea of oxidation and basic chemical reactions. Density Experiment With Water Watch The Floating Egg! This means you will only have two cups to work with. To remove this tarnish, an acid needs to be used to weaken the bonds between the copper and oxygen atoms. Since we have 6 different liquids here, its best to properly label each cup. Keep the pennies in the cup. Kids are naturally curious, and as their parent or guardian, you will want to encourage that as they grow older. Cleaning Penny Experiment Teaching Resources | Teachers Pay Teachers Make each cell (square) of the table large enough to place your penny in it after your testing is complete. Penny cleaning science projects are a popular choice at grade school science fairs - and for good reason. Once you have the pennies, pour some of the soda into the glass. In each case, make sure the penny is completely covered by the contents of the cup. You can only guess how highly acidic this ketchup must be! Place a square of clean, white paper towel in front of each cup. Shine Bright Like aPenny! - Scientific American 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. 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. Have additional paper towels available to wipe off any remaining solution from the pennies. 'Fun, ' link: Hypothesis: If I use 4 different products to clean pennies, adding each product to the a plastic dish (not mixing together), I predict that out of the 4 products, ketchup, fabuloso, coke, and lemon juice that lemon juice will clean a penny the best. Now when you dipped it into the salt + vinegar solution and then air-dried it, it also took with it some chlorine which is often found in salt. Recently, we did thisCleaning Pennies Experimentand the results were surprising to my kids. 4. Be sure to include one water cup as a control and one ketchup cup. Once all of the pennies have been rinsed, use your fingers to gently scrub the pennies one at a time with your baking soda paste (keep your gloves on for this part!). Vinegar and lemon juice are both acids. Discover the quickest ways to keep your Air Force 1s looking like they're fresh out of the box. A variety of products can be used to keep your pennies looking shiny and new. 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. Once they are clean place them on the towels you laid out in front of the cups. What happened to the coins when air dried? (Or have a fun science fair project?) Once the budding scientist has a pile of pennies, he or she should choose and collect their selection of cleaning solutions. 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'? Post your question for our scientists. Dry the pennies with a paper towel. For any other use, please contact Science Buddies. Lawrence holds a Bachelor of Fine Arts in screenwriting from New York University and a Master of Science in childhood education from Brooklyn College. Continue to place each penny in the 5 minutes column in its corresponding cup. But still fun expiriment!! As we have seen experimentally, acid alone does not clean as well as acid and salt. Look how much cleaner it is. Science - Lesson 2 of 50 - Grades 4,5,6 Water. For example, ask them if they know you can clean pennies, why you should clean pennies, and what would be the best thing to use to clean pennies? 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. 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. Find out! This is because when the hydrochloric solution cleaned the coin and air dried it, it also took with it some of the salt. My goal is to encourage moms, find practical parenting solutions, and help moms with the unique challenges twins bring! 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). Stir until the salt dissolves. 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. But heres the question that Im sure is brewing in your mind. 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!). Its not just dependent on how old the pennies are. Using the tape and marker, label each dish or cup with the name of the solution that will go into it. CokeCoke and off-brand colas will quickly remove the tarnish. Step 1 Fill a glass cup with vinegar and pour it in a non-metallic bowl. Salt is also a key ingredient in the other cleaning agents, thus making them effective in cleaning the pennies. What do your results tell you about the special properties of copper pennies? 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. You may print and distribute up to 200 copies of this document annually, at no charge, for personal and classroom educational use. Place the pennies in the bowl, and allow them to sit for several minutes. Kids will love Groovy Lab in a Box because it contains everything they need to do experiments focused on science, technology, engineering and math (STEM). A great way to do this is by doing fun science experiments with your kid at home. And because this mixture is way up high in the acidic scale, it cleaned the coin so much better and quicker than just vinegar. Pour cup of baking soda into one of your plastic cups. When copper reacts with oxygen and chlorine, it turns blue-green instead! Dont be afraid to use all your senses. 2002-2023 LoveToKnow Media. This bluish-green color is called Malachite. Begin by pouring the vinegar into the bowl. Please enter a search term in the text box. 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. As they are exposed to the environment, pennies become coated with a layer of copper-oxide, making them look tarnished (dull, brown and dirty appearance). Copper oxide is blackish. Try leaving the pennies in the solutions for different lengths of time. You have students write a hypothesis for what they think will happen in each solution and then let them soak. Pop another coin in both the ketchup and vinegar and salt mixture. Answers to, Questions: 1 colour page Make this your own and let your kids explore. Were there any cleaning methods where the time didnt matter, so the 1 minute and 5 minute pennies are equally clean? 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. Just click on the image to find more science fun. Great for President's Day! At Home Chemistry: Cleaning Pennies with Ketchup I needed a quick science activity. Smear a small amount of toothpaste onto a dirty penny. Keep the pennies in the cup. Mix one tablespoon of salt with half a cup of vinegar in a small container and stir until the salt dissolves. Can you think of why time would be important? Make sure you stay with your kids during this part and engage with them. Do you notice any changes in the contents of the cups is anything bubbling, or changing color? Ketchup Soak your pennies in ketchup to clean them like new. Add the pennies. Over time, pennies form a layer of copper oxide on the surface of the penny, which actually protects it from further corruption. Remember that at the very start, I said you should use only copper coins? 'Dry Ice Bubble, ' link: Pennies are good for more than just buying penny candy. Analysis and Graph - Cleaning Pennies Why or why not? Add the salt, and stir until the salt is completely dissolved. If you have dirty, dull, or green pennies lying around, try the cleaning pennies science experiment to turn them bright again! Taco Sauce Penny Cleaner - Steve Spangler Scrub each penny for 10 seconds, then rinse it again with water and place it back into its cup. Line these cups up in a row. it does not say the date and author on the website! This website is helpful to me but,add more steps and I think it can be more helpful. . Science - Lesson 6 of 50 - Grades 4,5,6, my middle school special education classroom. How to Create an Escape Room for Teaching, 50 Homeschool Science Experiments (that cost next to nothing) | Free Homeschool Deals .
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