Vinegar. This is an instruction and recording sheet for our penny experiment. Your solution should be dark blue. Store the jar in a safe place for one day. If I put a copper penny in soap and water, lemon juice, vinegar and salt, coca cola, or ketchup, then vinegar and salt will clean the copper penny the best because it has the most acid. Place a penny in it and cover the penny with ketchup. Line them up in the container, and pour the cola over them so that they're sitting in a cola bath. This is whyafter reading about the experiment I wanted to find out why the pennies are cleaned. Try both sides of the penny, clean vs. dirty, etc or any other combinations you can think of. Pour a few ounces of vinegar into a shallow dish. Water. After he's finished, have him write the conclusion. 2. STEP4 - Pop your coins into your glass of coke. Dip a penny halfway into the liquid and hold it there for 10-20 seconds. Now it's time to add the pennies on top of the paper towel. Watch Crayons Melt to Form Art →. Select a dish with an opening wide enough to allow you to reach in and grab the coins. 2. 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. Students will create a booklet or for a quicker project, just print the worksheet. Put each of the other two pennies into its own paper cup. Place the egg within the jar and pour the coke over the egg. Remove the penny from the liquid. we put the pennies in the dish an then we poured the vinegar on top of the penny. Washing pennies with water is a physical change. Materials. Add one whole container of liquid food coloring to the jar. 1/2 cup vinegar. Place your flowers in the liquid and wait 24 hours. The goal of this experiment (as outlined) is to determine if soapy water or ketchup will clean pennies more efficiently. Well, that didn't happen. Look how much cleaner it is! PDF. Students discover which cleaning solution works best to clean it and why using the scientific method! In order to perform a good experiment it is best to control as many variables as possible in order to isolate the one you are testing for. Gather materials and make copies of the Wet Pennies Handout. The soda cleans the pennies because it contains phosphoric acid. 1 penny. 2. Conclusion: The hypothesis was proven true, and the pennies, were best cleaned by the strongest acid, which in this experiment was lemon juice. All you need are pennies, water, dish soap, salt, and vinegar. Mix together 3.0 grams of sodium chloride and 15 ml of vinegar in a clean, 100 ml beaker. For example, if your values for the plain tap water were 0.7 mL, 0.9 mL, and 0.95 mL, the average would be (0.7 + 0.9 + 0.95) ÷ 3 = 0.85 mL. Pour 3 different liquids into small cups. Well, after you wash the ketchup off, that is. Before starting the experiment, I made a hypothesis based on the background information so I can see which ingredient will have more efficiency. Students discover which cleaning solution works best to clean it and why using the scientific method! We used about ⅓ cup of vinegar. 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. The standard format for these types of reports includes an abstract, introduction, materials and methods, results, and an analysis or discussion section. Line them up in order according to the dates on the penny. Paper towels. Dependent Variable: how clean the pennies are. . $4.50. Repeat step 9 for your new stack. Make sure the two water beakers are filled with water. . If you need help calculating an average, ask an adult for help. The pennies are now shiny and look new! Repeat the experiment, but clean counter tops this time. Students love to collect and bring in a dirty penny for this science experiment. Grab a can of Coke, an empty jar, and one delicate egg. Set one penny aside. Add a different color food dye to each jar, adding enough so the color is vibrant. Grasp a silver penny with tongs. Remove the pennies and rinse them thoroughly with water. Place the penny (tails side up) on a . Make sure you keep track of from which cup they came. Procedure. Place a penny on a flat surface and record the number of water drops that can be added to the top of the penny before the water spills over. Get Started Before the Activity. . Second: Add separate cabbage leaves or flowers to each jar, with the stalk/stem submerged under the water. 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. 5 th Grade Science Fair Project. The cleaning action will be visible for several seconds. 2 teaspoons salt. Results Best to worst: • banana pepper juice • kosher dill pickle juice • grapefruit juice • cola • coffee. The pennies are made of copper atoms, but sometimes the copper atoms combine with other atoms to make molecules. What you will need: 20 old pennies (not shiny) ½ cup white vinegar 2 teaspoons salt (divided) 2 Non-metal bowls Paper towels Clean water . Dish soap. 1.) Pour just vinegar into the other small bowl. This penny cleaning experiment a fun supplemental homeschool science activity. You might consider lemon juice or soda. 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. Put the coins into the bowl for about 5 minutes. Write your answers down on the science page and compare the results with your hypothesis. 2. In this lab, you will be specifically going through the scientific method while performing an experiment using a little chemistry. Make a Lava Lamp →. MATERIALS : 5 small glass cups, 200 ml cup of. we sat an waited for 5 min. 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 should keep the goggles on until the cups are put away in step six. In the third cup, put 1/2 cup vinegar and 2 teaspoons of salt. You need: Pennies; Water; Droppers; The first of our experiments is the simplest, and one of the most fascinating for students. Place your pennies in each small bowl. STEP3 - Cover one side of each coin with Blu-Tac but leave the other side open. Dump the rest of the pennies into the liquid. Pour just vinegar into the other small bowl. Salt. After 5 minutes, remove the pennies and make a note of the color. First, lay your dirty penny on top of a piece of paper or clean cloth. Fill half of one container with one of the six substances referred to in the materials list. Viscosity is a liquid's resistance to flowing. Shiny Clean Pennies Pour the salt and vinegar into the bowl. Place them on a paper towel to dry off. IV) Test/Experiment. Students love to collect and bring in a dirty penny for this science experiment. Begin your control experiment. Step 1: Start with a "clean" penny. water, rubbing alcohol, and vegetable oil). Read the book together, talk about the cool facts, observe the coins, and sort them. Phosphoric acid breaks down the copper oxygen compound and causes a new layer of the copper to be exposed. When copper atoms combine with oxygen atoms in the air, they make a molecule called copper oxide, which makes the penny look dirty. Pennies get dull over time because the . In the first cup, put plain water. Cleaning Pennies: A controlled Experiment is one in which only one variable is tested at a time. 3.) Wait for 10 minutes. Description. Create a Lemon Battery →. We can change the experiment by adding lemons instead of oranges or we could have used more salt which probably have cleaned it better. Remove the pennies, rinse them in water, and rub them with a paper towel. Dry it off on a paper towel. Next, comes the toughest part of this science experiment - the waiting. 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. 7. Put pennies in each solution to see which one does the best job of cleaning the pennies. Interest: I have a science fair and this project seemed very interesting because I have a lot of pennies (about $10.00 worth) that are dirty. Remove the other pennies and rinse them with water before letting them dry. Take a photo of them with a piece of white paper as the background. Which solution will clean pennies the best? Repeat steps 10 and 11 one more time. The clean penny held 38 drops of water. Place your pennies in each small bowl. 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 A clean steel screw or bolt. Stir until the salt dissolves. Hypothesis. Finally: Check on your cabbage the following day. Ketchup also has been effectively used in the past due to the vinegar and salt concentration found in Ketchup. Conduct an Experiment. Place one penny into each liquid. Soap and water won't clean the pennies because oxidation is a chemical change. Viscosity depends on the size and shape of the particles that make the liquid, as well as the attraction between the particles. Purpose. After a few minutes, take out half of the pennies and lay them on a paper towel to dry. All you need are pennies, water, dish soap, salt, and vinegar. 3. . Do not handle the clean pennies with your hands. Pass out goggles. Students discover which cleaning solution works best to clean it and why using the scientific method! When it is clean and shiny to your liking, flip the penny over, and repeat the same process on the other . Procedures. Stir copper sulfate into some hot water in a beaker until no more will dissolve. You can "clean" a penny a little bit and very slowly with lemon juice or vinegar (mild acids), but put a dash of salt in the lemon juice and the penny will turn orange with a quick rub. 5/05/2010 1:39 PM Before trying to clean the pennies with salt and vinegar, have your kids try to wash them with soap and water. For cleaning up, I used a variety of materials such as lemon, vinegar and salt, water, water with soap. Hold it there for about 10 seconds, then pull it out. Students will create a booklet or for a quicker project, just print the worksheet. 1.Rip a paper towel to fit into your small containers and line the bottoms. We did the experiment with the pennies an the vinegar. Take the second half and clean them with soap very well. Remove the penny from the liquid. When the Penny Drops. Make a note of the color of each. En. Rinse the pennies with tap water and place them on some dry paper towels. Compare between the three piles against the control group. He should record the results, as above. To clean the copper pennies, place them in the sodium chloride/vinegar solution until they are shiny. Scientific Question: which of the four ingredients will have the capacity of cleaning the pennies better? 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. Add the pennies. Gently remove the egg from the jar and examine what the soda has done . 1.Rip a paper towel to fit into your small containers and line the bottoms. The salt and acetic acid in vinegar do the trick. Stage 1: First, prepare all your cups and line them up. Compare the penny from the ketchup to the control penny. 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. For this experiment, you only need a few simple supplies. Step 2: Hold the penny with the tweezers provided, then dip it into the TESTING LIQUID. Create a solution of vinegar and salt using one teaspoon of salt and 1/4 of a cup of vinegar. Jessica McBrayer did an experiment on cleaning pennies using a solution of ¼ cup white vinegar, and 1 teaspoon salt. 1. It will also help your flowers live a little longer! STEP2 - Pour out a glass of your cola. Solutions: Soap and water Coke Ketchup Vinegar Water Vinegar. Pennies made after 1982 are made from copper and zinc, so the reaction is less. Q. A dropper. Drop several dirty pennies into the vinegar. Third: Leave your cabbage leaves over night. Then, they added one of the liquids to each glass. Dry the pennies with a paper towel. Put the salt and vinegar in the bowl. For this experiment, you only need a few simple supplies. Dry with a towel. , and 1 camera. This Corrosiveness of Soda experiment only proves and supports ADA's position on the said issue. 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. So 1st cup will have catsup, 2nd will have coke, and so on. Pennies in apple cider vinegar turned black November 27, 2016. Coke. Washing pennies with water is a physical change. Be sure to remove as much residue as possible - without using soap! As in ketchup, salt and vinegar are both in hot sauce. Pour the vinegar and salt into one small non-metal bowl and stir to dissolve. This was a quick fun little experiment to do. Hot Sauce. Put 6 ounces of water in each jar or container. Put a dollop of ketchup on a plate. Take half the pennies out and place them on a paper towel. 3. How to Make the Silver Pennies Turn Gold. Cleaning Pennies The project that I made, consisted in cleaning up old and dirty pennies. Make a bar graph of your results. Wait about 5 minutes, then remove the pennies from the solution. Make a Volcano →. Kitchen Science with over 50 Fantastic Experiments, by Chris Maynard (DK Publishing); ISBN -7894-6972-3; Background for Teachers. How to Write Up an . Let it cool. We had a blast with this! Which liquid cleans pennies the best?. Scientific research reports are an important part of finishing up science projects and sharing your results. Remove the penny from heat as soon as it changes color. Fill the medicine dropper with water. Wait for about 5-10 minutes. In one cup, pour enough vinegar to cover the penny. Dump the rest of the pennies into the liquid. Remove the pennies from the cups, using the strainer, as follows. 4 Ask yourself Ask yourself what might clean the copper oxide. Penny Cleaning Science Fair Project for Eighth-Graders . 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). 4.) $1.95. The pennies will be cleaner and brighter than before. Liquids that have a LOW viscosity flow quickly (ie. Record how much each solution cleaned the pennies on the data table. Age group: elementary and up. In fact, the cola was in 4th place as a cleaner. Place a penny in the container. Compare all three pennies. All you need are pennies, water, dish soap, salt, and vinegar. In the other cup, pour enough liquid soap to cover the penny. Our Conclusion. You now have a stack containing 4 pennies and 4 nickels, like the stack shown in Figure 8. She took some pennies out of the solution and rinsed them, and took the rest of the pennies out and did not rinse them. First: Add water to each jar, filling about half way. Rinse the penny in tap water and dry completely. Paper towels for clean up. hey. Penny Change Experiment Instructions Part 1 - Dull to Shiny Pour the vinegar and salt into the small non-metal bowl and stir to dissolve. Stir in salt until it dissolves. 149. The American Dental Association or the ADA has warned people that too much soda could damage their teeth particularly their tooth enamel. 14 Best Science Experiments for Elementary School: Make a Tornado in a Jar →. Create a Rain Cloud in a Jar →. 2.) 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.. The experiment that I have chosen to research and experiment on was which is the proper way to clean or remove deposits from a . My project clearly shows the banana pepper juice was the best cleaner. 2. 4. Before bed, come back to your experiment and flip the pennies over. STEP5 - Sit back and wait but you should be able to see a difference in the . What do you see? 4. 3 clear cups. Make Slime →. After creating a volcano science project, it's important to write a clear presentation. Pour the contents of the Water 1 cup into the Water 2 cup, catching the pennies with the strainer. Do not forget to record the number of pennies, the number of nickels and the measured voltage and current in your data table. Soap and water won't clean the pennies because oxidation is a chemical change. Students love to collect and bring in a dirty penny for this science experiment. A bowl will work best, but you could also use a coffee mug or small Tupperware container. For each liquid, use about 2 ounces (about one-half inch of liquid height). The pennies will need a chemical reaction to make them shiny again! Prepare the key for copper-plating by cleaning it with a thin layer of toothpaste or soap and water. Leave the pennies in the liquid for 5 minutes. Take out the pennies and rinse them with fresh water. Clean a Dirty Penny Science Experiment. A dropper. 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. Gather all materials. Before trying to clean the pennies with salt and vinegar, have your kids try to wash them with soap and water. Students love to collect and bring in a dirty penny for this science experiment. Supplies. Now your pennies are ready to take a bath. Paper towels. Problem. What do you see? In the second cup, put water mixed with dish soap. Gather materials. Salt. Label the cups. Students will create a booklet or for a quicker project, just print the worksheet. A questionable aspect of this experiment is arisen with the change of the color of ammonia during the experiment. With our question formed and guesses made, it was time for the simple science experiment. Notes Safety an the penny was getting cleaner an then we waited another 5 min.to see what will happen the when we waited it was clean like a brand new penny was just used. The Scientific Method and Chemistry Biology is a science. We used vinegar, ketchup and milk. Set one penny aside to act as your control. This means we use the scientific method to answer questions. Students record observations on the Clean Pennies data sheet. 3. Give each pair of students a cup with a small amount . Rinse the gold penny under water to cool it. Pour the vinegar onto the paper towels until it is absorbed. Allow extra liquid to drip off the penny into the container before proceeding to the next step. For maximum results, you'll want to wait 24 hours. Which of the five liquids used will make these pennies the cleanest and shiniest?. Stir until the salt dissolves. Since we have 6 different liquids here, it's best to properly label each cup. 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). It's a great option for Presidents' Day, too! Conclusion • My hypothesis that the cola would clean the penny the best was incorrect.
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