CALCIUM
HISTORY
PROPERTIES
PHYSICAL: silvery-white metallic, solid, relatively soft metal, capable of being shaped of bent, melting point is 851°C and boiling point is 1482°C
CHEMICAL: used as a deoxidizer in steel, when heated in air or in oxygen it ignites, and its highly reactive with acids
PERIODIC TABLE INFO
ATOMIC MASS: 40.078 amu
ATOMIC NUMBER: 20
NUMBER OF PROTONS: 20
NUMBER OF NEUTRONS: 20
NUMBER OF ELECTRONS: 20
HYPHEN NOTATION: Calcium-40
COMPOUNDS AND USES
USES:
- may be used as a reducing agent in metal extraction
- used in the production of some metals as an allying agent
- calcium carbonate is used to make cement and mortat and also in the glass industry
- calcuim cabide is used to make plastics and to make acetylene gas
- calcium phosphate is used in animal feed and fertilizers
COMPOUNDS:
- Calcuim Hydride (CaH2)
- Calcium Dichloride (CaCl2)
- Calcium Diiodide (CaI2)
ALKALINE EARTH METALS
PROPERTIES:
- shiny
- silvery-white
- readily lose their two outermost electrons to form cations with a 2+ charge
- low densities
- low melting points
- low boiling points
STOICHIOMETRY
BOILING POINT: 2,703 degrees fahrenheit or 1,484 degrees celsius
MELTING POINT: 1,584 degrees fahrenheit or 842 degrees celsius
REACTION TYPES
SYNTHESIS: Ca + O + CaO
DECOMPOSTION: 2Ca(NO3)2 >> 2CaO + 4NO2 + O2
SINGLE REPLACEMENT REACTION: Ca(s) + 2H2O(l) >> Ca(OH)2(s) + H2(g)
DOUBLE REPLACEMENT REACTION: CaCO3(s) + HCl(aq) >> CO2(g) +H2O(l) + CaCl2(aq)
CALCIUM NITRATE
CALCIUM OXIDE
CALCIUM NITRATE AND SODIUM CARBONATE
CALCIUM CHLORIDE
BOND TYPE: Ionic
% COMPOSITION: Ca: 36.11% Cl: 63.89%
SHAPE: Linear with two total pairs
ACROSTIC POEM
Alkaline earth metal
Limestone is crystalline calcium carbonate
Compounds involving calcium are widely used
In milk
Used to remove oxygen, sulfur, and carbon from alloys
Most abundant of the metallic elements in the human body