-How was it discovered?

-Calcium was discovered by Humphrey Davy

-When was it discovered?

-Calcium was discovered in 1808

-What was it named after by?

-Calcium was named after the Latin term calyx meaning lime, a is a reactive silvery metallic element found in group 20 of the scientific periodic table.

-How is it used as in the past?

-Calcium metal is used as a reducing agent in preparing other metal such as thorium and uranium.

-What is color is this chemical?

-Calcium is a very ductile silvery tallish color.