dinsdag 28 november 2017

Magnsium notes

Magnesium has atomic number 12 and the symbol Mg.

A magnesium atom consists out of 12 electrons, 12 protons and 12 neutrons.

Magnesium is a shiny silver-gray solid lightweight alkaline earth metal.

Magnesium's melting point is 650 degrees celcius.
And magnesium's boiling point is 1091 degrees celcius.

Magnesium is protected by a thin layer of oxide that is fairly
impermeable and hard to remove.

Magnesium has three stable isotopes: 24Mg, 25Mg and 26Mg.
And The isotope 28Mg is radioactive.

The metal can be produced artificially, and is highly reactive.

Magnesium is essential to all cells and some 300 enzymes.
Magnesium ions interact with polyphosphate compounds such as DNA.
And hundreds of enzymes require magnesium ions to function.

Magnesium compounds:
 Magnesium forms a variety of compounds important to industry and biology,
 For example: Magnesium carbonate, magnesium chloride, magnesium citrate,
                       magnesiumhydroxide  (milk of magnesia),
                       magnesium oxide, magnesium sulfate, and magnesium
                       sulfate heptahydrate (Epsom salts).

Compound uses:
 Magnesium compounds are used medicinally
 Magnesium carbonate, chalk is used as a drying agent for sports where grip is required
Extra: Roasting either magnesium carbonate or magnesium hydroxide produces the oxygen   
           compound magnesium oxide,which is used in the manufacture of cements, high temperature  
           refractory bricks, electrical and thermal insulators, fertilizer, rubber, and plastics.

Uses of magnesium:
 To make aluminium-magnesium alloys
 Die-casting (alloyed with zinc)
 Production of titanium in the Kroll process
 Magnesium is used in super-strong, lightweight materials and alloys
 Because of low weight and good mechanical and electrical properties it is widely used in electronics
 As an additive agent in conventional propellants
 As a reducing agent to separate uranium and other metals from their salts.
 Magnesium batteries

Safety:
 Magnesium metal and its alloys can be explosive hazards.
 They are highly flammable in their pure form when molten or in powder or ribbon form
 And it reacts violently with water.
 When working with powdered magnesium,
 safety glasses with eye protection and UV filters
 are employed because burning magnesium produces ultraviolet light.


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