Five physical properties of calcium are: a melting point of 1548 degrees Fahrenheit, boiling point of 1757 degrees Fahrenheit, color of silver or gray, solid standard state and molar volume of 26.2 centimeters cubed. Calcium is placed on the alkaline earth metal group (group 2) on the periodic table. Its symbol is Ca, and its atomic number is 20.
Calcium was discovered in 1808 by Sir Humphrey Davy. The name calcium comes from the Latin calx, which means lime. It is classified as a metallic.
Calcium is an essential element for many living things. It is important in the human body where calcium phosphate makes up a large portion of human bones. Calcium also plays an important role in the membranes and cell walls of plants.