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Calcium Element Project
2
William McTaggart: Calcium
Calcium Basics
Atomic Name: Calcium
Atomic Number: 20
Atomic Symbol: Ca
Atomic Mass: 40.078
Atomic Diagram:
Valence: 2
Electron Dot Diagram:
Oxidation: +2
Calcium In Depth
Discoverer: Sir Humphry Davy, British Chemist
When: 1808
Where: England
How: Electrolysis of a Mixture of Lime, CaO, and mercuric oxide, HgO
Name: "Calx" Means Lime in Latin. Lime is an oxide of Calium
Calcium Physical Properties
Solid: Yes
Very Soluble
Metal: Alkaline Earth Metal
Boiling Point (K): 1767
Melting Point (K): 1112.2
Density: 1.55 (g/cm cubed)
Hardness: (Mohs): 1.5
Heat of Fusion (kJ/mole): 9.3
Heat of Vaporization (kJ/mole): 151
Heat of Atomization: (kJ/mole): 178
Thermal Conductivity (J/m sec k): 201
Source: Calcite (oxide)
Calcium Chemical Properties
Highly Reactive
Forms Nitride Coating When Exposed to Air
Not Very Flammable
Burns With High Intensity Orange Flame
Reacts With Water, Creating Hydrogen
An Important Component of a Healthy Diet and Necessary for Life
Calcium Products and Uses
Products:
Dried Herbs
Cheese
Sesame Seeds
Tofu
Almonds
Flax Seeds
Dairy Products
Leafy Vegetables
Brazil Nuts
Herring
Uses:
Maintaining Bones and Teeth
Treating Heartburn
Treating Indigestion
Decreasing Type 2 Diabetes Risk
Treating Osteoporosis
Treating High Blood Pressure
Treating High Cholesterol
Treating High Potassium
Reducing Colon/Breast Cancer Risk
Reducing Stroke Risk