Calcium carbonate.
eggshell is a kind of compound CaCO3 (calcium carbonate)
calcium carbonate is one of them, CaCO3
Use a chemical deglosser, a scouring pad or sand paper
Eggshell
When nitric acid is added to eggshell, a chemical reaction occurs where the calcium carbonate in the eggshell is dissolved by the acid. This reaction produces carbon dioxide gas, water, and calcium nitrate. The eggshell will dissolve, leaving behind a liquid containing dissolved calcium nitrate.
The eggshell is porous.
When an egg is placed in acetic acid, the acid will start to break down the calcium carbonate in the eggshell. As a result, the eggshell will dissolve, leaving behind the inner membrane of the egg. This process is a demonstration of a chemical reaction between the acid and the calcium carbonate in the eggshell.
When an egg is placed in vinegar, the vinegar reacts with the calcium carbonate in the eggshell, causing it to dissolve. As the eggshell dissolves, the egg absorbs water through osmosis, making it swell in size. This increase in size is due to the influx of water into the egg through the now porous eggshell.
latin word of eggshell
it sounds weird but it looks kind of like seaweed in a bowl
Calcium Carbonate is the main component in an eggshell
The eggshell provides protection.