CALCIUM (Ca)
BY: NATALIE ZIMMERMAN
CALCIUM IDENTIFICATION
Mass Number: 40
Protons: 20
Neutrons: 20
Electrons:20
CALCIUM CHEMICAL MAKEUP
PROPERTIES
Atomic Mass: 40.078
Atomic Radius in picometers (pm): 194pm
Density: 1.550 g
Melting Point: 842°C (1,548°F)
Boiling Point: 1,484°C (2,703°F)
At room temperature (22°C), this element is a: Solid
Appearance: Hard, silvery metal
Conductivity: 2.9×107 S/m
Malleability: Capable of being dented or bent
Hardness: Soft
Flammability: When heated in air or in oxygen it ignites
Reactivity: Highly reactive to acids, slightly reactive to water
HOW CALCIUM WAS DISCOVERED
CALCIUM APPLICATIONS AND USES
Calcium is used as a reducing agent in preparing other metals such as thorium and uranium, an alloying agent for aluminum, beryllium, copper, lead and magnesium alloys, building stone, cement, to make limestone, soil conditioner, and water softener. It is most often found in leaves, bones, teeth, and shells. Calcium is the fifth most abundant element in the earth's crust and makes up more than 3% of the crust. It is also found in various minerals including limestone, gypsum and fluorite.Calcium is used as a reducing agent in preparing other metals such as thorium and uranium, an alloying agent for aluminum, beryllium, copper, lead and magnesium alloys, building stone, cement, to make limestone, soil conditioner, and water softener. It is most often found in leaves, bones, teeth, and shells. Calcium is the fifth most abundant element in the earth's crust and makes up more than 3% of the crust. It is also found in various minerals including limestone, gypsum and fluorite.
OTHER USES
CALCIUM SUPPLEMENT
FOOD SOURCES
SOURCES
- Element Card: Gray, Theodore W. (2008). The Photographic Card Deck of the Elements.
- Elements Book: Gray, Theodore W. (2009). The Elements: A visual exploration of every known atom in the universe. New York: Black Dog & Leventhal Publishers, Inc.
- Royal Society of Chemistry Periodic Table: http://www.rsc.org/periodic-table/element/20/calcium
- Periodic Table.com: http://www.rsc.org/periodic-table/element/20/calcium
PICTURE SOURCES
1. http://chemicool.com/elements/images/300-calcium-metal.jpg
3. http://patentimages.storage.googleapis.com/WO2005040134A1/imgf000002_0001.png
4. http://www.abcgallery.com/L/lawrence/lawrence97.jpg
5. http://www.sco.ca.gov/Content-Images/ARD/crayons.gif
6. http://c4.soap.com/images/products/p/AUS/AUS-145_1z.jpg
7. http://www.deltadentalvablog.com/wp-content/uploads/2013/02/osteoporosis_36.jpg