Which of the five liquids used will make these pennies the cleanest and shiniest?. Place one penny into each liquid. Kitchen Science with over 50 Fantastic Experiments, by Chris Maynard (DK Publishing); ISBN -7894-6972-3; Background for Teachers. Select a dish with an opening wide enough to allow you to reach in and grab the coins. hey. Place a penny in the container. Pennies made after 1982 are made from copper and zinc, so the reaction is less. Place your flowers in the liquid and wait 24 hours. 3.) Now your pennies are ready to take a bath. As in ketchup, salt and vinegar are both in hot sauce. After 5 minutes, remove the pennies and make a note of the color. Wait about 5 minutes, then remove the pennies from the solution. Make a bar graph of your results. 4 glass cups (you can use plastic, those some liquids may damage plastic when left to sit overnight) 12-16 pennies Water Lemonade Soda Vinegar Safety goggles Liquids that have a LOW viscosity flow quickly (ie. Prepare the key for copper-plating by cleaning it with a thin layer of toothpaste or soap and water. Drop several dirty pennies into the vinegar. 1. In the first cup, put plain water. Make a note of the color of each. Paper towels. Conclusion My hypothesis that the cola would clean the penny the best was incorrect. She took some pennies out of the solution and rinsed them, and took the rest of the pennies out and did not rinse them. Students love to collect and bring in a dirty penny for this science experiment. This penny cleaning experiment a fun supplemental homeschool science activity. How to Make the Silver Pennies Turn Gold. Which solution will clean pennies the best? Next, pour one liquid into each cup. Line them up in the container, and pour the cola over them so that they're sitting in a cola bath. 1.Rip a paper towel to fit into your small containers and line the bottoms. Since we have 6 different liquids here, it's best to properly label each cup. Pour the vinegar and salt into one small non-metal bowl and stir to dissolve. Conduct an Experiment. Pennies made after 1982 are made from copper and zinc, so the reaction is less. Compare the penny from the ketchup to the control penny. Stir until the salt dissolves. The clean penny held more than the dirty penny. Hot sauce, like Tabasco or taco sauce, also will remove the oxides off pennies. After he's finished, have him write the conclusion. Gently heat the penny in the outer (cool) part of a burner flame or with a lighter or candle (or even set it on a hotplate). Put each of the other two pennies into its own paper cup. 4.) Remove the penny from heat as soon as it changes color. Allow extra liquid to drip off the penny into the container before proceeding to the next step. This means that the darker-coloured sodas are stronger and are more corrosive compared to the lighter colour sodas. 1/2 cup vinegar. As indicated in the student instructions, each team needs three containers (beakers or cups) of liquid: one containing water, one containing rubbing alcohol, and one containing vegetable oil. The experiment that I have chosen to research and experiment on was which is the proper way to clean or remove deposits from a . Create a solution of vinegar and salt using one teaspoon of salt and 1/4 of a cup of vinegar. MATERIALS : 5 small glass cups, 200 ml cup of. 4 Ask yourself Ask yourself what might clean the copper oxide. The standard format for these types of reports includes an abstract, introduction, materials and methods, results, and an analysis or discussion section. Solutions: Soap and water Coke Ketchup Vinegar Water Stir in salt until it dissolves. Pennies get dull over time because the . , and 1 camera. A dropper. Pour just vinegar into the other small bowl. Paper towels. " Student Lab Notebook Affiliate Link Before trying to clean the pennies with salt and vinegar, have your kids try to wash them with soap and water. 2. Add the pennies. $1.95. Place your pennies in each small bowl. Place the penny (tails side up) on a . Now carefully add one drop of water at a time to the top of the penny. Now it's time to add the pennies on top of the paper towel. 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. Make Slime . Using Vinegar and Salt to clean the tarnish off of pennies has been a long used method due to the reaction of the acetic acid and the mix of salt has, thus revealing the bright copper metal underneath. 3. After one hour take the pennies out and rinse them. Label the cups. We used vinegar, ketchup and milk. Procedure. STEP1 - When you're out and about collect up some copper coins. Take out the pennies and rinse them with fresh water. 3 clear cups. Repeat the experiment, but clean counter tops this time. Dry it off on a paper towel. Students will create a booklet or for a quicker project, just print the worksheet. Pennies in apple cider vinegar turned black November 27, 2016. Set one penny aside. For cleaning up, I used a variety of materials such as lemon, vinegar and salt, water, water with soap. Make sure you use enough to wet the entire paper towel. Try both sides of the penny, clean vs. dirty, etc or any other combinations you can think of. Step 2: Hold the penny with the tweezers provided, then dip it into the TESTING LIQUID. Students discover which cleaning solution works best to clean it and why using the scientific method! Purpose. grape juice,200 ml cup of orange juice,200 ml of pineapple juice, 1 measuring cup, 5 dirty pennies, 200 ml cup of apple juice, 200 ml cup of tomato juice. 1.) Students will create a booklet or for a quicker project, just print the worksheet. Pour just vinegar into the other small bowl. Make a Volcano . The pennies will need a chemical reaction to make them shiny again! Your solution should be dark blue. Finally: Check on your cabbage the following day. Place them on a paper towel to dry off. People say that ketchup and taco sauce are good cleaners for pennies, but read the ingredients: "Tomatoes, Vinegar, Salt . The pennies are made of copper atoms, but sometimes the copper atoms combine with other atoms to make molecules. In fact, the cola was in 4th place as a cleaner. Put the salt and vinegar in the bowl. Be sure to remove as much residue as possible - without using soap! My son, who is in 8th grade, did a science experiment where he hypothesized that the higher the acidic content of the solution, the shinier the penny would be. Let them stay in the paper towel for an hour. Hypothesis. 1. This is an instruction and recording sheet for our penny experiment. This means we use the scientific method to answer questions. While holding the penny on a flat, stable surface with one hand, use the pencil eraser to rub the dirt and brown oxidation off of the penny using a small circular motion. Students discover which cleaning solution works best to clean it and why using the scientific method! Notes Safety You need: Pennies; Water; Droppers; The first of our experiments is the simplest, and one of the most fascinating for students. Read the book together, talk about the cool facts, observe the coins, and sort them. We had a blast with this! 3. What you will need: 20 old pennies (not shiny) cup white vinegar 2 teaspoons salt (divided) 2 Non-metal bowls Paper towels Clean water . Rinse the pennies with tap water and place them on some dry paper towels. PDF. 3. To clean the copper pennies, place them in the sodium chloride/vinegar solution until they are shiny. We tried using gel colors and they did not absorb nearly as well as the liquid, even though the water was colored. Pour a few ounces of vinegar into a shallow dish. Soap and water won't clean the pennies because oxidation is a chemical change. Do not handle the clean pennies with your hands. Fill the medicine dropper with water. Add one whole container of liquid food coloring to the jar. 2.) Results. Dip one penny halfway into the liquid. All you need are pennies, water, dish soap, salt, and vinegar. Write the name of each liquid on a strip of paper and put one strip beside the cup to mark it. Second: Add separate cabbage leaves or flowers to each jar, with the stalk/stem submerged under the water. STEP2 - Pour out a glass of your cola. The American Dental Association or the ADA has warned people that too much soda could damage their teeth particularly their tooth enamel. After hour the pennies that were not rinsed were greenish looking and the rinsed pennies were clean. Then, they added one of the liquids to each glass. we put the pennies in the dish an then we poured the vinegar on top of the penny. Students discover which cleaning solution works best to clean it and why using the scientific method! In one cup, pour enough vinegar to cover the penny. Put 3 pennies into the bowl for about 30 seconds. IV) Test/Experiment. 5/05/2010 1:39 PM Science Procedure: Pour vinegar into the jar - about half way or so! Salt. How to Write Up an . STEP3 - Cover one side of each coin with Blu-Tac but leave the other side open. Q. Dip a penny halfway into the liquid and hold it there for 10-20 seconds. Jessica McBrayer did an experiment on cleaning pennies using a solution of cup white vinegar, and 1 teaspoon salt. Take a photo of them with a piece of white paper as the background. Record how much each solution cleaned the pennies on the data table. Remove the pennies and rinse them thoroughly with water. If i use ketchup, Coca cola, bleach, lemon juice, vinegar, and soap+water to clean a penny then coke will clean the penny the best after two hours. When the Penny Drops. Experiment: put dirty pennies in acids and watch them become clean I have tried the experiment and it works. If you need help calculating an average, ask an adult for help. A bowl will work best, but you could also use a coffee mug or small Tupperware container. Gather all materials. Before starting the experiment, I made a hypothesis based on the background information so I can see which ingredient will have more efficiency. My project clearly shows the banana pepper juice was the best cleaner. Do not forget to record the number of pennies, the number of nickels and the measured voltage and current in your data table. Fill the dish with enough liquid to totally submerge several pennies at once. Procedures. With our question formed and guesses made, it was time for the simple science experiment. Hot Sauce. Students love to collect and bring in a dirty penny for this science experiment. Wait for about 5-10 minutes. Stir until the salt dissolves. In this lab, you will be specifically going through the scientific method while performing an experiment using a little chemistry. Our Conclusion. Procedure: Put the salt and vinegar into the bowl and mix until it dissolves. Hold the medicine dropper just above the top of the penny (not touching it . Gather materials. Store the jar in a safe place for one day. Penny Cleaning Science Fair Project for Eighth-Graders . 1 penny. Create a Rain Cloud in a Jar . Cleaning Pennies The project that I made, consisted in cleaning up old and dirty pennies. After creating a volcano science project, it's important to write a clear presentation. Students will create a booklet or for a quicker project, just print the worksheet. Experimental Procedure: Fill four cups each one quarter full with each of the six cleaning solutions suggested (4 with lemon juice, 4 with orange juice, 4 with cola, 4 with water, 4 with baking soda paste and 4 with dish liquid). My results did not back up my hypothesis because the vinegar cleaned the pennies better than the oranges. Students should keep the goggles on until the cups are put away in step six. Scientific research reports are an important part of finishing up science projects and sharing your results. Using a book like Lots and Lots of Coins by Margarette S. Reid, introduce your child to a bit of American history and some of our greatest presidents with a handful of coins. Viscosity depends on the size and shape of the particles that make the liquid, as well as the attraction between the particles. Washing pennies with water is a physical change. A clear, shallow bowl (not metal) 2 clean steel nails. Make sure the two water beakers are filled with water. Conclusion: The hypothesis was proven true, and the pennies, were best cleaned by the strongest acid, which in this experiment was lemon juice. The pennies are now shiny and look new! . Label 5 paper towels (1) soap and water (2) Lemon Juice (3) vinegar and salt (4) coca cola (5) Ketchup. 2. This was a quick fun little experiment to do. Step 1: Start with a "clean" penny. Rinse the gold penny under water to cool it. Well, that didn't happen. To determine which liquid will make the pennies the cleanest. . Results Best to worst: banana pepper juice kosher dill pickle juice grapefruit juice cola coffee. In the third cup, put 1/2 cup vinegar and 2 teaspoons of salt. Do this by adding the values for the three trials and then dividing by 3. Look how much cleaner it is! The pennies will be cleaner and brighter than before. Take the second half and clean them with soap very well. Viscosity is a liquid's resistance to flowing. Put the coins into the bowl for about 5 minutes. 2 eye droppers (1 for water and 1 for soap) 3 beakers (1 for drops of water, 1 for soap and 1 for rinsing) Data sheet. Remove the pennies from the cups, using the strainer, as follows. Paper towels for clean up. What do you see? A dropper. The clean penny held 38 drops of water. Dump the rest of the pennies into the liquid. First: Add water to each jar, filling about half way. Remove the other pennies and rinse them with water before letting them dry. Ketchup also has been effectively used in the past due to the vinegar and salt concentration found in Ketchup. When copper atoms combine with oxygen atoms in the air, they make a molecule called copper oxide, which makes the penny look dirty. Hypothesis: If I put a copper penny in coca cola, soap and water, ketchup, white vinegar, and salt and vinegar will clean the copper penny the best because the vinegar and salt has the most acid.. Put a dollop of ketchup on a plate. Dry the pennies with a paper towel. Mix together 3.0 grams of sodium chloride and 15 ml of vinegar in a clean, 100 ml beaker. Put pennies in each solution to see which one does the best job of cleaning the pennies. For maximum results, you'll want to wait 24 hours. We can change the experiment by adding lemons instead of oranges or we could have used more salt which probably have cleaned it better. Place a penny in it and cover the penny with ketchup. Soak your pennies in ketchup to clean them like new. Salt. Wait for 10 minutes. 1.Rip a paper towel to fit into your small containers and line the bottoms. Students discover which cleaning solution works best to clean it and why using the scientific method! We used about cup of vinegar. Before trying to clean the pennies with salt and vinegar, have your kids try to wash them with soap and water. Powered by Create your own unique website with customizable templates. Fill half of one container with one of the six substances referred to in the materials list. For each liquid, use about 2 ounces (about one-half inch of liquid height). Get Started Pour the vinegar and salt into one small non-metal bowl and stir to dissolve. STEP5 - Sit back and wait but you should be able to see a difference in the . Grab a can of Coke, an empty jar, and one delicate egg. We did the experiment with the pennies an the vinegar. The Scientific Method and Chemistry Biology is a science. we sat an waited for 5 min. The cleaning action will be visible for several seconds. Make a Lava Lamp . . It will also help your flowers live a little longer! Next, comes the toughest part of this science experiment - the waiting. 7. 5 th Grade Science Fair Project. I put two. 2. First, lay your dirty penny on top of a piece of paper or clean cloth. Have him use a clean rag dampened in distilled white vinegar to clean part of the counter top and a commercial counter top cleaner to clean a separate part. 2 teaspoons salt. A questionable aspect of this experiment is arisen with the change of the color of ammonia during the experiment. Dependent Variable: how clean the pennies are. In the second cup, put water mixed with dish soap. Coke. Mix until the salt is dissolved (it helps if the vinegar is a little warm). Make sure you keep track of from which cup they came. Students love to collect and bring in a dirty penny for this science experiment. Write your answers down on the science page and compare the results with your hypothesis. Pour the vinegar onto the paper towels until it is absorbed. Place your pennies in each small bowl. You might consider lemon juice or soda. Materials. 2. Add a different color food dye to each jar, adding enough so the color is vibrant. Put 6 ounces of water in each jar or container. Make Ice Cream in a Ziplock Bag . Before bed, come back to your experiment and flip the pennies over. You now have a stack containing 4 pennies and 4 nickels, like the stack shown in Figure 8. Washing pennies with water is a physical change. Hypothesis: if salt and vinegar removes the dirty better, then the pennies will be brighter because its components have the capacity of cleaning dirtiness easier. Water. The older and dirtier the better. Clean a Dirty Penny Science Experiment. Phosphoric acid breaks down the copper oxygen compound and causes a new layer of the copper to be exposed. Paper towels. Gather materials and make copies of the Wet Pennies Handout. Stage 1: First, prepare all your cups and line them up. PDF. The goal of this experiment (as outlined) is to determine if soapy water or ketchup will clean pennies more efficiently. All you need are pennies, water, dish soap, salt, and vinegar. Scientific Question: which of the four ingredients will have the capacity of cleaning the pennies better? Repeat steps 10 and 11 one more time. 2. Gather up a few dirty pennies. Watch Crayons Melt to Form Art . Supplies 4 glass cups (you can use plastic, those some liquids may damage plastic when left to sit overnight) 12-16 pennies Water Lemonade Soda Vinegar Safety goggles The girls put 3-4 coins in 4 small glasses. Wipe the penny off with a paper towel and rinse off. 14 Best Science Experiments for Elementary School: Make a Tornado in a Jar . Pass out goggles. What did happen is that the higher the acidic solution was, the darker the pennies became. Rinse the penny in tap water and dry completely. Before the Activity. Problem. Vinegar. Age group: elementary and up. Create a list of suggestions. Unformatted text preview: Project conclusion The vinegar cleaned the pennies better than the oranges. En. Shiny Clean Pennies Pour the salt and vinegar into the bowl. This Corrosiveness of Soda experiment only proves and supports ADA's position on the said issue. All you need are pennies, water, dish soap, salt, and vinegar.
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