What does the shell look like? Is the egg getting bigger? After 24 hours change the vinegar. Be very careful not to poke a hole in the shell while doing this.
Cover the egg with fresh vinegar and let sit for another days! We accidently poked a hole in a shell of one of three eggs we had included in this science experiment. So, it was a fail…but, it was a really cool way to see what the inside of an egg looks like! In a couple of days, the shell should be completely gone! Bouncing eggs experiment kbn sharescience scienceisfun scienceforkids scienceexperiment homeschoollife handsonlearning captureplay parentingchaos preschool snowdayideas momsoninstagram preschoolathome.
The shell of an egg is made of calcium carbonate. Write down your observations each day. After about 3 days the egg will start to become translucent and you will know it is ready to move to step 3.
Step 3 — Carefully remove the egg from the glass and rinse it under some tap water. While rinsing the egg, gently rub the outside of the egg and the white film will come off leaving you with a translucent egg. Examine the egg and make some observations. Does the egg look different from when you started the experiment?
Does the egg feel different? Perhaps you notice that it feels rubbery like a bouncy ball. Write down your observations. Step 4 — Over a plate or other container, lift the egg inches in the air, let go, and watch it bounce. What is happens to the egg? Does it bounce? Is this different than what you expected? Wondering what caused the egg to bounce? Find out the answer in the how does this experiment work section below.
The egg becomes bouncy as a result of a chemical reaction between the eggshell and the vinegar. The eggshell of a chicken egg is made of calcium carbonate, and vinegar is a weak acid. The calcium carbonate that makes up the eggshell will react with the vinegar the same way baking soda reacts with vinegar just a lot less violently.
You know the vinegar and calcium carbonate of the eggshell are reacting because of the small bubbles that form around the egg when it is placed in the vinegar. These small bubbles are carbon dioxide gas, which are the result of the reaction between calcium carbonate and vinegar.
Once the shell of the egg is gone, all that is left covering the egg is a thin membrane. The membrane of a chicken egg is selectively permeable. The vinegar is able to cross the selectively permeable membrane of the egg through osmosis. The vinegar toughens up the membrane of the egg making it bouncy! The only difficult part is waiting! A whole week in fact is what you need to wait. Looking for easy science process information and free journal pages? STEP 1: Place an egg in the jar and cover with vinegar.
You can color the vinegar for rainbow-colored rubber eggs too! STEP 2: Wait and watch! Notice the bubbles on the eggshell! This is the acid in the vinegar reacting with the calcium carbonate in the shell.
This reaction is producing a gas called carbon dioxide! STEP 3: After 48 hours, remove the egg and rinse it off. Ours had a layer of brown scum that was easily washed away!
The hard outer shell is gone and the egg white and yolk are surrounded by a thin membrane. Now for the fun part, exploring the naked egg with your child!
We gathered a few supplies such as a magnifying glass and a large flashlight. However, first, we talked about what our naked egg felt and looked like. We had made a cool rubbery feeling egg! Help your child learn to explore by asking questions to spark curiosity! All of these questions encourage exploration and hands-on learning. Have kids use their senses to observe!
What does it smell like? What does it look like? There are so many ways to explore. Grab the magnifying glass too! Watch out! This might get messy! What happens when you put the naked egg up to a flashlight?
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