Calcium is a chemical element with symbol Ca and atomic number 20. Calcium is
a soft gray ... Because it is generally nontoxic and abundant, calcium is found in
many useful materials and minerals. C...
In nature, calcium is found in rocks, chalk, and seashells. It is found in the bones,
muscles, and nerves of animals and in many different plants. In the food you eat ...
Calcium does not occur as the metal itself in nature and instead is found in
various minerals including as limestone, gypsum and fluorite. Stalagmites and ...
Calcium is rarely found in its elemental form, but is readily found throughout the
Earth mostly in the form of rocks and minerals such as limestone (calcium ...
Energy of first ionisation. 589.6 kJ.mol <sup>-1</sup>. Energy of second ionisation. 1145 kJ.
mol <sup>-1</sup>. Standard potential. - 2.87 V. Discovered. Sir Humphrey Davy in 1808 ...
... sulfur and oxygen. Calcium with oxygen forms lime, which is used extensively.
... Discovered by: Sir Humphry Davy of England. Description: Named from the ...
Apr 25, 2013 ... Properties, sources and uses of the element calcium. ... It is never found isolated
in nature but is often found combined in minerals such as ...
This shows where calcium appears on the periodic table of the elements.
He is best known for discovering calcium, sodium, potassium, magnesium,
strontium, and barium. He also discovered nitrous oxide and two types of lamps.
Apr 7, 2014 ... Fun fact: Calcium is the most abundant mineral in the body, and is found naturally
in a wide variety of foods and beverages and added to many ...