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it makes the bone rubbery and can make it bendy
The vinegar (weak acetic acid) will de-calcify (remove the calcium) from the bone - thus rendering it flexible...easy to perform yourself. Best to clean the bone well before trying, change vinegar solution each day.
Spine. Bone, not muscle.
That cracking sound is the result of crepitus, which is the result of bone on bone movement or bone on ligament movement.
Your backbone "bends" as you bend over.
When you put a chicken bone in vinegar, a chemical reaction occurs due to the acidic nature of vinegar. The acetic acid in the vinegar breaks down the calcium in the bone, which is a key component of bone structure. Over time, the bone will start to soften and eventually dissolve as the calcium is leached out into the vinegar solution. This process is known as demineralization and is often used in educational settings to demonstrate the effects of acids on calcium-based materials.
When a chicken bone is soaked in vinegar, the acidic nature of vinegar starts to dissolve the calcium in the bone, leaving behind a more flexible and rubbery collagen matrix. This causes the bone to lose its rigidity and become bendable like rubber.
The acid in the vinegar dissolves out the calcium in the chicken bone. (Calcium is most of the reason that bones are hard.)
A chicken bone that has been in vinegar for 5 days may appear white or translucent due to the acid in the vinegar breaking down the minerals in the bone. The acidic environment of the vinegar helps to dissolve the calcium in the bone, leaving it looking pale or clear.
Vinegar is commonly used to make chicken bones more flexible due to its acidity, which helps break down the bone material. Placing a chicken bone in vinegar for a few hours or days can weaken the bone structure, making it more flexible.
acid
It will be sprite