RUBBER EGGS CLAUDIA MIQUEL ANDREA LIDÓN EXPERIMENT • DESCRIPTION SOAK EGGS IN VINEGAR TO INITIATE A CHEMICAL REACTION AND DISSOLVE THE EGGSHELL. • OBJECTIVE CHEMICAL REACTION BETWEEN THE ACETIC ACID IN VINEGAR AND THE CALCIUM IN EGGSHELLS. WE WILL ADD HARD-BOILED EGGS TO DIFFERENT SOLUTIONS TO OBSERVE THE CHEMICAL REACTION. WITH THIS EXPERIMENT WE CAN EXPLORE ACIDS AND BASES AND CHEMISTRY IN THE HUMAN BODY. • MATERIALS HARD-BOILED EGGS AND VINEGAR MEASURING CUP THINGS TO CONSIDER • STARTED AT THE BEGINNING OF A WEEK. • 3–5 DAY PERIOD. • ELEMENTS ARE PURE SUBSTANCES • EGGSHELLS CONTAIN CALCIUM CARBONATE • VINEGAR IS A MIXTURE OF WATER CALLED ACETIC ACID EXPERIMENTAL PROCEDURE Pour one cup of vinegar into a container (cup or jar) Place an egg in the container. Make sure the egg is completely submerged. Allow the container to remain undisturbed for three to five days. If necessary, add more vinegar to keep the egg submerged. After three to five days, remove the egg from the vinegar and gently rinse it with water. THE ACETIC ACID WILL REACT WITH THE CALCIUM THE EGGSHELL. AS A RESULT OF THIS REACTION, THE CARBONATE IN VINEGAR COMPLETELY DISSOLVES THE SHELL, LEAVING BEHIND THE SOFT AND BOUNCY HARD-BOILED EGG, COVERED ONLY BY A THIN MEMBRANE. WHEN A CHEMICAL CHANGE IS COMPLETE THE ACETIC ACID REACTS WITH TO FORM CARBON DIOXIDE, CALCIUM ACETATE, AND WATER. THE BUBBLES THAT FORM ON THE EGG ARE CALCIUM CARBONATE THE CARBON DIOXIDE AND ARE A SIGN THAT A REACTION IS TAKING PLACE. • CALCIUM CARBONATE • ACETIC ACID • CARBONIC ACID THE OVERALL REACTION IS ... BENEFITS People also need calcium, to support bone and tooth structure. Milk are primary sources of calcium. In human diets. If we eating a wide variety of foods with calcium, we can help us to get the calcium that we need each day to stay strong and healthy. • Likewise, too much acidity can wear away at your tooth enamel. The acids in soda pops, fruit juices, and other types of highly acidic foods and beverages can corrode the calcium in your teeth, leading to sensitivity, cavities, or other health problems. VIDEO • HTTPS://WWW.YOUTUBE.COM/WATCH?V=FEYS5I5P7YY QUESTIONS; • DO YOU THINK THAT THE BUBBLES THAT FORM ON THE EGG ARE IMPORTANT? • HAVE YOU EVER TRIED THIS EXPERIMENT AT HOME? THANK YOU FOR YOUR ATTENTION!!!