Done by: Jeremy Teo(14) 1O2
Jul 08, 2015
Done by:Jeremy Teo(14) 1O2
In geology, the crust is the outermost solid shell of Earth or natural satellite, which is chemically distinct from the underlying mantle.
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)
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
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‘.
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‘
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.
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.
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‘.
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.
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.
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