CALCIUM

Untitled Slide

• 20 protons, neutrons, and electrons
• Atomic mass of 40.078
• Atomic number is 20
• Boiling point: 1484 degrees Celcius
• Melting point: 839 degrees Celcius
• Period 4, Group 2
• Density is 1.55 g/cm3
• Is a solid in its natural state
• Silver-gray color

Calcium was prepared as lime by Romans, but wasn't truly "discovered" and isolated until 1808, when Sir Humphry Davy studied it.

Calcium is an Alkali earth metal, and is most commonly used in fireworks, plastics, rodenticides, torpedoes and flares. Calcium can be found in milk, also.