Calcium
By: Natalie Shrewsberry
History
- Calcium was discovered in England in 1808 by a man named Sir Humphrey Davy.
- Calcium come from the Latin word calx which means lime.
Description
Calcium is a hard grey silvery metal.
- Name: calcium
- Symbol: Ca
- Atomic number: 20
- Atomic Mass: 40.078
- Color: silvery white
- Classification: Metallic
- Group: 2
- Period: 4
Properties
- Density-1550kg m-3
- Melting Point-842 degrees C/2703 degrees F
Interesting Facts
- fifth most abundant element in the Earth's crust
- calcium carbonate is the base of the cement industry