TEN Quick and Easy Science Experiments for Kids! You explained the science behind it perfectly. I know I was. by Brenda Priddy | Jul 12, 2017 | Homeschool |. Stir until the salt dissolves. This blue-green is called malachite and copper can turn into malachite over many years of exposure to chlorine and oxygen. Place two equally tarnished pennies on each of three different plates. 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. Vinegar and SaltMake a solution of vinegar and salt and let the pennies soak. Make sure your child doesn't lick the pennies or try to eat any because ketchup is tasty. Leave the coins in the liquid for 10 minutes. Notify me of follow-up comments by email. Well, after you wash the ketchup off, that is. Experiment with even longer periods of time with each of the cleaning methods. Put a dollop of ketchup on a plate. You see, copper coins are usually shiny and well, copper-colored. Explore this article things needed 1 Preparation 2 Collect pennies of varying color Collect pennies of varying color. Hold it there for about 10 seconds, then pull it out. Here is how to set up your cleaning pennies experiment. Conclusions - Cleaning Pennies Cleaning Pennies Home The project that I made, consisted in cleaning up old and dirty pennies. This website is helpful to me but,add more steps and I think it can be more helpful. Update Includes Google Slides version for distance learning science experime Subjects: Remember that at the very start, I said you should use only copper coins? Science: Project Cleaning Pennies Question: What products clean pennies the best? 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). When copper reacts with oxygen and chlorine, it turns blue-green instead! In the second cup, put water mixed with dish soap. Put 1 tablespoon Ketchup into each Ketchup cup. Make three signs that say "Tomato Paste + Vinegar," "Salt + Vinegar," and "Tomato Paste + Salt.". Wash your hands. The friction does the work. Place each of the pennies in the 1 minute column into their corresponding cup. 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. This is what the pennies look like sitting at the bottom of the glass. 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. 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. Record this number on your data table under trial 1. Line these cups up in a row. A questionable aspect of this experiment is arisen with the change of the color of ammonia during the experiment. But the vinegar by itself didnt clean the coin as well as the vinegar + salt solution! Were there any cleaning methods where the time didnt matter, so the 1 minute and 5 minute pennies are equally clean? Taco Sauce Penny Cleaner - Steve Spangler Yes, thats right. What is the optimal time to leave the pennies in the cleaning solution? After several minutes . What is the optimal time to leave the pennies in the cleaning solution? Extra: Experiment with even longer periods of time with each of the cleaning methods. Remember that copper turns dark brown when reacting with oxygen? 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! Stir until the salt dissolves. The acid in vinegar, like in citrus, is what really takes the tarnish away. 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. This easy and fun science experiment teaches kids about chemical reactions in a way that seems like magic! Dirty Pennies Kitchen Science Experiment - Science Fun Ketchup. I'm so glad you liked it! In each case, make sure the penny is completely covered by the contents of the cup. Put a dollop of ketchup on a plate. Medioimages/Photodisc/Photodisc/Getty Images. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. 'Fire Water Balloon, 25-IN-1 BUNDLE (Set 1 of 2) - Grades 4,5,6, What is in this '25-IN-1 BUNDLE'? Materials: -pennies, fabuloso, ketchup, coke, lemon juice, paper . Put 1 tablespoon of Lemon Juice and 1 teaspoon of salt into each Lemon cup. 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. 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. Ketchup Soak your pennies in ketchup to clean them like new. What happens? If you have dirty, dull, or green pennies lying around, try the cleaning pennies science experiment to turn them bright again! TPT empowers educators to teach at their best. Compare the penny from the ketchup to the control penny. This bluish-green color is called Malachite. 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! Please enter a search term in the text box. 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. Lesson contains See a penny pick it up, all day long youll have good luck! maybe youve heard this phrase before, and maybe youve even stopped to pick up a lucky penny off the sidewalk. Read this: Life Lessons from the Scientific Method.). Your Materials For This Science Experiment & Steps Combined. Ketchup and oranges have a high acid content as dovinegar and lemons. This is why most pennies you see look dirty or tarnished, its not actually dirt, but copper-oxide that makes them look so dull. Once you have the pennies, pour some of the soda into the glass. Label each cup with a pen so you and your kids know what liquid is in each up. Penny lab experiment conclusion.By comparison, the old pre-1982 copper pennies were 95% copper and 5% zinc with a density of 8. 'Balloon Powered Rocket, ' link: So there you go, thats how it cleaned the coins too. 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!). 2023 LoveToKnow Media. Leave the coins to air dry for at least 30 minutes. Place your Control, 1 minutes penny into the Control 1 cup. Remove the pennies and rinse them with water. Your email address will not be published. Compare the 1 minute and 5 minute pennies in each row. 'Dry Ice Bubble, - Lesson 3 of 50 - Grades 4,5,6 Add the pennies. Whats in the Bag?Making MusicMouse Paint (, gel frosting)Rain PaintSecret MessagesDucks Like RainFloat or Sink PumpkinsDo Seeds Travel?VolcanoesThe Windy DayDo Whales Get Cold?Candle RacesWh, Rated 4.92 out of 5, based on 838 reviews, . 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. Which penny is the cleanest, compared to the control? 10 very dirty pennies (the dirtier the better! 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. Place the penny (tails side up) on a flat surface. Thanks a lot Meriley. Stir in about one teaspoon of salt and mix until it dissolves. 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. Repeat the process until the penny reaches the desired shininess. Your kids will love this simple chemistry experiment. Rocking Chair, Glider, or Recliner for the Nursery: Is It Worth It? 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. This activity helps students to see and experience the properties of water- including Adhesion, Cohesion, and Surface Tension. Problem & Hypothesis - Cleaning Copper Pennies - Google Sites Once the budding scientist has a pile of pennies, he or she should choose and collect their selection of cleaning solutions. Try other materials containing small amounts of acid to see which produces the best results. Which is the least clean? It is a step-by-step, that the students can perform on their own. Some common suggestions include: Plain water Soapy water Lemon juice Vinegar Vinegar with salt Ketchup Hot sauce Coca Cola Baking soda and water Apple, grape, or orange juice Milk Forming a Hypothesis But, can make them shiny and new again. Isnt that amazing? Copper oxide is blackish. Do you notice any changes in the contents of the cups is anything bubbling, or changing color? As we have seen experimentally, acid alone does not clean as well as acid and salt. For any other use, please contact Science Buddies. Now closely look at each coin. Can you think of other safe household acids you could test? Wipe the penny off with a paper towel and rinse off. 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Educational Toys And Child Development Research Studies. If you are doing this with older children who can write you can have them write out a grid for penny comparison. 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. Copper oxide is what causes pennies to become dull. 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. Instructions. The answer is pretty simple before 1982, pennies were made almost entirely from copper, and modern pennies are made of copper-plated zinc. Grab a cup of coffee, some of that chocolate youre hiding from the kids, and join me as I learn, experiment, and explore with my kiddos and hopefully inspire you a little in your journey alongside smart, quirky, creative kids, too! Science Experiment: How to Clean Pennies - Teach Beside Me Step 3: Dump all the pennies into the liquid. Thanks for the rare idea to wash penny. Kindergarten Math Practice with the Zap Zap Math App, Falling Unexpectedly in Love With Homeschooling My Gifted Child, Disclosure Policy & Copyright Information. This will be where you place your coins for comparison. Observe paper clips next day. In this case, talk with the young scientist about which solutions he or she thinks will best clean the pennies. Great for President's Day! Wipe the excess ketchup off the pennies, then rinse them off. Compare all of the pennies to the control pennies. Make this your own and let your kids explore. 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. Plus, theyll learn some cool facts about metals, the pH scale, and the Statue of Liberty. Keep it out of reach with a note to be sure no one drinks the soda. Teachers- the materials are readily available! Acids vs. Bases: Cleaning Pennies Experiment - Scientific AmeriKen 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. Its that dull dark color that coats old coins. And what is vinegar? Wipe the coins dry with their paper towels and compare them. Wait at least two minutes before rinsing the pennies. Cleaning Pennies Home Experiment Conclusions Annex Analysis This graph interprets the results of the experiment. Cleaning With Lemon Experiment | Science project - Education And hydrochloric acid is so much more acidic than vinegar alone. Since we have 6 different liquids here, its best to properly label each cup. In this activity, were going to test a few different methods for cleaning pennies, and determine which gets our pennies the cleanest. Again, make sure the penny is completely covered by Ketchup. Which method works best is determined by the amount of acid present, and the presence of salt. But still fun expiriment!! You might be surprised at how well the ketchup cleaned the penny. Gently swirl the cup so that the penny is completely covered with Ketchup. 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. Once there's a working hypothesis, the experiment itself can begin. The project above is a DEMONSTRATION. This is why bright shiny pennies dull with age. Wet a toothbrush and begin scrubbing the penny. What about soda? And be sure to share these additional fun learning activities with your kids! This one is exciting, low prep, and engaging. Water is the worst because it is a neutral liquid, meaning that it sits smack in the middle of the pH scale. Did you get to the same conclusion that the ketchup and the vinegar + salt mixture cleaned the coins the most? . The reason for this is that copper has quite the relationship with Oxygenthat isthey react to each other. 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. Repeat the experiment with the same pennies in a new solution of vinegar and salt and see if you can make them even brighter! Dry the pennies with a paper towel. Wait about 5 minutes, then remove the pennies from the solution. Lab, Students of all ages have fun doing this easy, ! Curious about the science? This is because copper reacts to oxygen in the air and it turns into a compound called copper oxide. Now comes the hardest part of the experiment - the waiting. I needed a quick science activity. This means you will only have two cups to work with.
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