Page 38 - Curriculum Visions Dynamic Book

Titanium (Ti)
Element 22.Titanium is a silvery-grey metal belonging to the transition metals in the Periodic Table.
It has a low density and great strength. Titanium has the strength of steel, but
is far lighter. It also resists corrosion as well as platinum.
Titanium is a good reflector of infrared radiation. It burns in air.
Pure titanium dioxide is almost transparent and reflects light as diamond does.
Key facts...
Name: titanium
Symbol: Ti
Atomic number: 22
Atomic weight: 47.87
Position in Periodic Table: transition
metal, group (4) (titanium group);
period 4
State at room temperature: solid Colour: silvery-grey
Density of solid: 4.5 g/cc
Melting point: 1,660°C
Boiling point: 3,287°C
Origin of name: named after the Titans
(the sons of the Earth goddess in
Greek mythology)
Shell pattern of electrons: 2–8–10–2
Discovery
It was discovered in 1791 by the English chemist and mineralogist, the Reverend William Gregor. He first called the element menachanite after Menaccan in Cornwall, England. It was later renamed titanium.
Technology
Geology
Titanium does not occur as the native element. It is the ninth most abundant element in the Earth’s crust. It is found in most igneous rocks, particularly
in rutile (titanium oxide,TiO2) and ilmenite (iron titanium oxide, FeTiO3).
Biology
Titanium is not found in living things.
Alloyed with other metals such as aluminium, molybdenum and iron, it adds strength and the ability to stand up to both high and low temperatures with less risk of metal fatigue.
It goes into aircraft fuselages, ship’s propellers, and replacement hips.The reflective properties are applied in solar observatories. It can make synthetic gemstones or, as compounds, paint and fireworks.
 This blade is
razor sharp and
can cut palm-oil
nut clusters.The
metal is titanium, which came from the fuselage of a fighter jet.
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