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Calcium

Chemical element with atomic number 20.

Ca

Calcium is a chemical element with the symbol Ca and atomic number 20. It is an alkaline earth metal known for its reactivity with water and air, forming a white oxide layer when exposed. Essential to biological systems, calcium plays critical roles in bone formation, muscle contraction, nerve signaling, and blood clotting processes. It is the fifth most abundant element by mass in Earth's crust.

Etymology

Calcium is derived from the Latin word 'calx' meaning lime.

Explain Like I’m 5

Calcium is a super important mineral that helps build strong bones and teeth, like the ones you need to smile!

Fun Facts

Calcium is the fifth most abundant element in Earth's crust
It was discovered in 1803 by Humphry Davy
Calcium is essential for muscle function

FAQ

What is calcium? It's a chemical element
Why is it important? It helps build bones and teeth
Where is it found? In milk, cheese, and leafy green vegetables

Hypernyms — Broader Categories

alkaline earth metal element

Holonyms — Wholes or Groups

Earth's crust

Indexes

chemical substance element

Related

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