| It is proven repeatedly that with super easy science | | | | another 24 hours. At the end of the 24 hours, take the |
| experiments, you do not need to re-invent the wheel | | | | bone out of the vinegar and make a knot in it! Place it |
| to have fun! In any way, tying knots in bones are far | | | | on a plate as well. What happened to the egg that you |
| more fun and impressive than trying to re-invent the | | | | left on the table after the 24 hours? It became hard |
| wheel! | | | | again! |
| In order to tie knots in bones, we need to understand | | | | Here is how it all works. The eggshell, just like the bone, |
| the basics first by doing a simple experiment with an | | | | contains calcium carbonate and that is the substance |
| egg. You can use a raw egg, but it is less risky with | | | | that makes the eggshell and the bone hard. Vinegar is |
| regard to cleaning if you use a boiled egg. | | | | an acid substance and once you combine or bring |
| Use a clear glass or jar and fill it up with enough | | | | these two substances into contact carbon dioxide is |
| vinegar to cover the egg completely and place the | | | | released. That was the bubbles you were seeing. This |
| egg into the glass or jar filled with the vinegar. You will | | | | chemical reaction will continue until all the carbon in the |
| see the principal of the experiment starting to happen. | | | | shell of the egg or in the bone is completely used up. |
| Do you see the bubbles rising from the egg? Good, | | | | This process takes about 24 hours to complete. |
| now leave the egg in the vinegar for at least 24 hours. | | | | So how do the egg and the bone becomes hard |
| After the 24 hours have expired, take the egg out of | | | | again? The calcium that remained in the bone and |
| the vinegar. What happened? The eggshell has | | | | eggshell absorbed the carbon dioxide in the air and this |
| become completely soft! Now repeat the same | | | | caused the bone and the shell to become hard again! |
| experiment, using the same vinegar, and put some | | | | With the chicken bones hard again, show them off and |
| chicken bones in the vinegar and wait 24 hours again. | | | | see if people can clarify the mystery of the knotted |
| Once you take out the egg of the vinegar, place it on | | | | bones! |
| a plate or in a bowl and leave it on the table for | | | | |