Leave the egg in the new liquid for at least 1 hour before you check on it. Has anything changed? Record the changes and the time in your science notebook. Check on the egg again in 12 hours. Record the time, any changes, and any new questions you have in your science notebook.
Why or why not? How do you think this might affect birds and their babies? Describe your experiment and take a picture, then send it to online scienceworksmuseum. Be sure you subscribe to our newsletter for updates on new activities! Free Jane Goodall coloring page. In just a short while, you should see some bubbles appearing on the outside of the egg. These are bubbles of carbon dioxide gas from the reaction.
It can take hours before a good portion of the shell is removed. A good sign of progress is a white frothy scummy layer on the top of the surface of the vinegar. After a day of soaking you can carefully remove the egg from the vinegar. I would suggest pouring the liquid into another cup and catching the egg in your hand. At this point you may be able to literally rub the shell off the egg with your fingers. It will rub off as a white powdery substance.
Depending on your particular egg, you may already have a naked egg. However, I would suggest you fill a cup with fresh vinegar and soak the egg for at least one more day. After two days of soaking you should have a pretty cool Naked Egg.
Notice that the egg is a bit bigger than when you first started. This is because some of the vinegar and some of the water in the vinegar has moved through the membranes to the inside of the egg. The membranes are semi-permeable and allow water to move through them. This is called osmosis. Naked eggs are cool, but experimenting with them is even cooler. You have probably already noticed that your naked egg is kind of rubbery.
How far above the table can you drop your egg and have it survive by bouncing? I would suggest you start at one inch, then try two inches, and so on. Keep in mind that eventually this is going to get messy when it the membrane breaks.
You might want to do this experiment outside. If you want to see your egg get really big, simply put it in a cup filled with water. This process of water moving through a membrane is called osmosis. Osmosis equalizes — or makes the concentration of water on both sides of the egg membrane the same.
This means the egg will swell as the water moves inside and get larger. You can even color the inside of your egg if you soak it in some water with food coloring. This is a nice way to verify that the water in the cup is really moving through the egg membrane and not just coloring the outside.
Of course, you just need a liquid that has only a little bit of water. A common substance you may have at home that fits this requirement is corn syrup. Log in Social login does not work in incognito and private browsers. Please log in with your username or email to continue. No account yet? Create an account. Edit this Article. We use cookies to make wikiHow great. By using our site, you agree to our cookie policy.
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Related Articles. Article Summary. Part 1. All rights reserved. This image may not be used by other entities without the express written consent of wikiHow, Inc. Gather your materials. For this experiment you will need a fresh, uncooked egg, a drinking glass, a dissolving solution such as white vinegar or a cola beverage, and days of patience.
The drinking glass needs to be large enough for the egg to touch the bottom without touching the sides of the glass. You can also use a plastic cup or container to hold the egg, but clear containers allow you to observe the experiment over time. Use a fresh egg because an older egg will float in the liquid. Before you begin, examine your uncooked egg for cracks. Place the egg in the glass and submerge with vinegar. Gently place the egg in the bottom of the glass taking care not to crack it.
Pour enough vinegar or cola over the egg until it is completely submerged in the liquid. The chemical reaction between the acetic acid in the cola and the calcium carbonate in the eggshell causes the shell to dissolve.
Cover and refrigerate the egg for 24 hours. Keep it out of the way so it doesn't get knocked around. Replace the vinegar in the cup after 24 hours.
After the first day, you should see the frothy residue of the shell on the surface of the liquid. You will also see that parts of the shell still remain on the egg. The shell takes at least 2 days to fully dissolve and may take up to 3. Gently pour out the vinegar taking care to keep the egg from falling out of the container. Carefully roll the egg back down to the bottom of the container and refill it with vinegar. Leave the egg undisturbed for at least 24 more hours. Place the egg back in the refrigerator and leave it alone.
After at least another 24 hours, remove the egg to check its progress. If there are no white spots or areas that look like shell left on the egg, the dissolving process is complete. Gently pour out the vinegar and catch the naked egg in your hand. See how it feels.
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