elements found in the earth’s crust
TRANSCRIPT
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Done by:Jeremy Teo(14) 1O2
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In geology, the crust is the outermost solid shell of Earth or natural satellite, which is chemically distinct from the underlying mantle.
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An element is a substance that cannot be broken down into similar substances.
They also have a symbol which is based on the element’s English or its name of another language.
Examples include: Mercury (Hg) Zinc (Zn) Nitrogen (N)
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Chemical symbol: O Physical state: Gas Colour: Colourless Uses- Combustion and needed for respiration Interesting facts:
First discovered by Carl Wilhelm Scheele in Sweden in 1771
Constitutes 21 % of the atmosphere Found in water, in most rocks and minerals
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Chemical symbol: Si Physical state: Solid Colour: Blackish- silverish Uses- Used in glass, ceramics, computers,
calculators and cement Interesting facts:
First discovered by Antoine Lavoisier in 1787 Found in sand The name originates from the Latin word 'silex‘.
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Chemical symbol: Al Physical state: Solid Colour: Silver Uses- Used in airplanes, packaging and
cooking equipment. Interesting facts:
First discovered by Hans Christian Oersted in 1825.
The name originates from the Latin word 'alumen‘
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Chemical symbol: Fe Physical state: Solid Colour: Silver Uses- Used in automobiles, machines the
ships and buildings. Interesting facts:
First discovered by the Egyptians in 4000 BC. One of the most commonly used metals. Found in meteorites and in most igneous rocks.
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Chemical Symbol: Na Physical state: Solid Colour: Silvery-white Uses- Used in common salt, soap and fizzy
drinks. Interesting facts:
Reacts explosively to water. Found in many compounds and stars.
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Chemical Symbol: Ca Physical state: Solid Colour: Silver Uses- Used in plaster, quicklime, cement, and
metallurgic and electronic materials. Interesting facts:
Found naturally in limestone, gypsum, and fluorite.
The name originates from the Latin word 'calcis‘.
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Chemical Symbol: Mg Physical state: Solid Colour: Silvery-white Uses- Used in structural alloys, pyrotechnics,
flash photography, and incendiary bombs. Interesting facts:
It is widely distributed in rock structures and highly reactive.
The name originates from a Greek district called Magnesia.
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Chemical Symbol: K Physical state: Solid Colour: Silvery-white Uses- Used in fertilizers and soaps Interesting facts:
It occurs in nature only in compoundsand can only be obtained by electrolysis of its common hydroxide.
It was first discovered by Sir Humphrey Davy in 1807.
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Google search engine Wikipedia http://www.periodic-table.org.uk/element-map.htm Pearson Longman- Chemistry Insights( ‘O’
level, 2nd edition) by Dr R.W. Heyworth and J.G.R. Briggs
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