Record your results; photographs are helpful. Kids are given some background on chemical reactions and oxidation. Materials: Dirty pennies Glass Vinegar Salt Measuring spoons Paper towels Instructions: Fill the glass about halfway full with vinegar. 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. Want to wow your kids with some simple kitchen science? Set one penny aside to act as your control. Therefore, each cleaning method you tested contained acid and salt, but the Ketchup and Tabasco sauce may have had a slightly weaker acid. This takes more work than the others, however. It appears, the salt breaks down somewhat, freeing chlorine ions into the solution. Sign up to learn about our special events, clubs, camps, promotions and school programs. Try more solutions. All you'll need is soda, a cup, pennies and some time. Put pennies in each solution to see which one does the best job of cleaning the pennies. Thanks for sharing! 'Elephant's Toothpaste, - Lesson 4 of 50 - Grades 4,5,6 Salt is another compound called sodium chloride, so it contains a chemical called chlorine (like what we use in swimming pools to keep them clean). In the third cup, put 1/2 cup vinegar and 2 teaspoons of salt. Hold it there for about 10 seconds, then pull it out. So for the 2nd stage of this experiment, you will work on these two materials alone. When the vinegar cleaned the coin, it stripped away the coating and exposed the copper. You are going to challenge your children to clean pennies with various kitchen condiments. This packet includes a direction list/timeline for the teacher, class observation form, 2 different CER responses (one, and one without a graphic organizer) AND an opportunity for students to graph and a, , and Which Type of Water Works Best? Cover the pennies with each of the mixtures, smear them around with your fingers, and give the ingredients at least 2 minutes to react. 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. 6. The soda cleans the pennies because it contains phosphoric acid. Just don't drink the coke afterward. Update Includes Google Slides version for distance learning science experime Subjects: Afterwards, put one old coin in each cup. For this experiment, you will need dirty pennies, paper towels, 1/4 cup of white vinegar, a tsp. A variety of products can be used to keep your pennies looking shiny and new. Thanks for the rare idea to wash penny. Try leaving the pennies in the solutions for different lengths of time. The "Penny Cleaning Experiment" is a product that provides a fun and educational activity for children and adults alike. Washing the pennies in a vinegar and salt solution removes the patina from the pennies, exposing the brighter copper underneath once more. 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. The experiment can be done with just as much fun and learning without using this tool. Just click on the image to find more science fun. Book a Science PartyHave the Science Guy visit your school! TPT empowers educators to teach at their best. As in ketchup, salt and vinegar are both in hot sauce. What happens? This product is designed to teach people how to clean old, tarnished pennies using simple household items such as vinegar and salt. Wait for about 5-10 minutes. Simple science experiment that works great with any age students! Not only will you be improving them as an individual, you will also be strengthening the bond you share together. CLEAN PENNIES WITH VINEGAR - ScienceBob.com If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this. Later when you have your results, you will be able to look back on what they have written down and compare their results to their initial answers. Ketchup and oranges have a high acid content as dovinegar and lemons. 10 very dirty pennies (the dirtier the better! While the coins are air drying in the second stage, you can talk your kids through their findings of the first stage together! The pennies will be cleaner and brighter than before. by Brenda Priddy | Jul 12, 2017 | Homeschool |. 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! How to Create an Escape Room for Teaching, 50 Homeschool Science Experiments (that cost next to nothing) | Free Homeschool Deals . 12-Page Black & White Download I love coming up with simple and fun learning and STEM activities for kids. You simply add salt to vinegar and you end up making an even more acidic concoction?
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