Calcium | Properties | Uses | Facts - Elements and Compounds


Friday, March 17, 2023

Calcium | Properties | Uses | Facts

Properties Uses and Facts about Calcium

    What is Calcium

    Calcium is classified as an alkaline earth metal, and chemically calcium is an element. Calcium is a silver-white colored metal. The density of calcium is 1.54 grams per cubic centimeter. Calcium is found in the solid state at room temperature, with a melting point of 842 °C (1548 °F) and a boiling point of 1484 °C (2703 °F). Calcium has the symbol (Ca), atomic number 20 and atomic mass 40.078 amu. Its atom has 20 electrons, 20 protons, 20 neutrons and 4 energy levels. In the Periodic Table, calcium is located in group 2, period 4 and block (S).

    Calcium was discovered by the English chemist Sir Humphrey Davy in 1808.
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    Properties of Calcium

    • Calcium is a silvery-white lustrous metal.
    • Calcium is a soft metal.
    • When exposed to oxygen, calcium forms a layer of gray colored oxide.
    • Calcium is a chemically active metal, so it is not found in pure state in nature.
    • Calcium, when exposed to water, produces calcium hydroxide (CaH2O2) and hydrogen gas.
    • Calcium reacts with all halogens.
    • Calcium reacts with most nonmetals.
    • Calcium metal is a good conductor of electricity and heat.
    • When calcium metal is ignited, it burns with a very bright orange light, and produces calcium oxide (CaO) and calcium nitride (Ca3N2).

    Uses of Calcium

    • Calcium is used during steel production to remove impurities from iron.
    • Calcium is used in the purification of thorium, zirconium and uranium metals.
    • Calcium is used as an alloying agent for beryllium, copper, lead, aluminum, magnesium alloys.
    • Calcium is essential for all living beings, calcium in our body is essential for the health of bones, teeth, muscles, nervous system and heart.
    • Calcium is used to remove oxygen, sulfur and carbon from some alloys.
    • Calcium sulfate (CaSO4) is used in the production of plaster-of-paris.
    • Calcium hydro-oxide (CaH2O2) is used in the production of cement and in water treatment.
    • Calcium carbonate (CaCO3) (limestone) is used in building construction.
    • Calcium chloride (CaCl2) is used for the orange glow in firecrackers.
    • Calcium Phosphide (Ca3P2) is used in making torpedoes.

    Interesting facts about Calcium

    • Calcium is the fifth most abundant element on Earth.
    • Calcium is the most abundant metallic element in our body.
    • 99% of the total calcium present in our body is stored in the bones and teeth.
    • About 1 kg of calcium is found in the body of an adult person.
    • Pure Calcium metal is produced by heating limestone with aluminum in a vacuum.
    • Marble, chalk and limestone are different forms of calcium carbonate (CaCO3).
    • Calcium nitrate [Ca(NO3)2] is a naturally occurring fertilizer.

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