Calcium

=﻿Calcium Ca atomic number: 20= Atomic mass: 40.078amu 20 protons 20 neitrons 20 electrons Meltingpoint: 839 degrees celcius Boiling point 1484 degrees celcius It's normal phase is solid Cost = $20 for 100g It belongsto the Alkaline Earth Metal family. It's origin is from the latin word for lime. It was discovered by Sir Humphry Davy in 1808. __**Inturesting info:**__ 1. It is silvery-white. 2. It is the fifth most abundant element in the earth's crust. 3. It is obtained from chalk, limesone and marble. 4. Only found in living organisms. 5. Vitamin D is needed to absorb calcium. 6. Difficiency in calcium affects bone growth and teath.

By: Zach Schulz