
Calcium carbonate (CaCO₃) is a crystalline, white ionic compound composed of calcium (Ca²⁺) and carbonate (CO₃²⁻) ions. In everyday life, it is known as limestone, marble, or chalk and holds great importance both naturally and industrially. Chemically, it is a stable salt with a basic character.CaCO₃ occurs naturally in various forms such as limestone, marble, chalk, and mussel shells. Industrial production is typically carried out by precipitation methods. Countries such as China, the United St
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İsmail Orçan

Seashells are the hard outer skeletons of certain animals that live in the sea. These animals are called mollusks. Because mollusks have very soft bodies, they produce hard shells made of calcium carbonate to protect themselves. These shells act like homes, shielding them from harm. We often see seashells washed up on beaches by the waves.How Are Seashells Formed?Seashells form slowly from a substance called calcium carbonate, secreted by the living organism inside. As the animal grows, the shel
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Elif Kavurga