What is egg shell made of?
Egg shells are primarily made of calcium carbonate (CaCO3), which is the same mineral found in limestone and chalk.
Here's a breakdown of its composition:
* Calcium carbonate: Makes up about 94% of the eggshell. It provides the shell's strength and rigidity.
* Organic matter: Makes up about 3% of the eggshell. It includes proteins like keratin, collagen, and glycoproteins, which help bind the calcium carbonate crystals together.
* Other minerals: The remaining 3% includes trace amounts of magnesium, phosphorus, and sodium.
This intricate composition is what gives the eggshell its protective qualities, allowing it to safeguard the developing chick within.
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