Ca calcium

Atomic Number: 20

Protons: 20 ________________Neutrons:20 _____________Electrons:20

Atomic Mass: __40.08__

It's a Solid.

It is a Metal.

Sir Humphrey Davy discovered it in 1808.

It's used to form parts of cell walls and bones.

Some Physical and Chemical Properties are:

*Density of a solid: 1550 kg

*Molar Volume: 26.2 cm3

*Poisson's Ratio: 0.31 (no units)

Calcium is the fifth most abundant element in the earth's crust and makes up more than 3% of the crust.

It reacts with water and the metal burns with a yellow-red flame, forming largely the nitride.

Calcium is essential for all life. It's important for blood clotting as well.

Credits:

Created with images by James St. John - "Zinciferous marble (Franklin Marble, Mesoproterozoic, 1.03-1.08 Ga; zinc mine in Franklin, northern New Jersey, USA) 1" • fdecomite - "Calcium" • James St. John - "Willemite-zincite-franklinite rock (Franklin Marble, Mesoproterozoic, 1.03-1.08 Ga; Franklin, New Jersey, USA)" • James St. John - "Magnesio-foitite tourmaline (Antananarivo Province, Madagascar) 4"

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