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Argon

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by

Raquel Costa

on 16 October 2013

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Transcript of Argon

ARGON
Argon was discovered in 1894 by Sir William Ramsay and Lord Rayleigh. Argon is obtained from air of the production of oxygen and nitrogen. It is used to fill incandescent and fluorescent light bulbs to prevent oxygen from corroding the hot filament.
The first hint of Argon's existence came from English scientist Sir Henry Cavendish as far back as 1785. Cavendish was unhappy that so little was known about air. He knew that nitrogen in the air could be reacted with oxygen to form. He aimed to find out if all of the air that was not oxygen or carbon dioxide could be converted to nitrous acid. If it could, he would know that air was entirely oxygen, carbon dioxide and nitrogen.
In 1892 English physicist John William Strutt also known as Lord Rayleigh announced that no matter how it was prepared oxygen was always 15.882 times denser than hydrogen. He found that the nitrogen in air was always denser by about 0.5 percent than nitrogen sourced from nitrogen compounds. In 1893 he wrote to Nature, announcing the problem to the world. Rayleigh’s paper awakened the serious interest of Scottish chemist William Ramsay, who had already been aware of the problem.In 1894 Ramsay took air and removed its components – oxygen, carbon dioxide and nitrogen. He removed the nitrogen by reacting it with magnesium. After removing the known gases from air, he found gas remaining that occupied one-eightieth of the original volume. Its spectrum matched no known gas. Rayleigh and Ramsay wrote a joint paper in 1895 notifying the world of their discovery. The new gas wouldn’t react with anything, so they named it argon.


Super Powers
My superhero is named Argos. I named him Argos because Argon was originated from the greek argos which means inactive. Argos super powers are invisibility because he's gas which means he's colourless, odorless and tasteless. He is chemically inactive so he won't react with other elements. Argon will start to dissolve in water which means he can't do rescue missions around water.

OR
My hero is influenced on good on plant, animals and the environment because Argos is made of oxygen and nitrogen and all living thing needs oxygen and nitrogen. He is harmless to any living thing therefore he can only save not kill any living thing.
History
Some Facts
Symbol: Ar
Atomic number: 18
Atomic Mass: 39.95 amu
Density: 1.784 g/cm3
Boiling point: - 186°C
Melting point: -189°C
etc.
Fantastic Four

My superhero team is formed by Argon and 3 other elements. The 3 elements are Magnesium, Nitrogen and Oxygen. My team is made of these elements because my super hero is made of Nitrogen and Oxygen. Magnesium was used to pull the known gases out of air, which left them unknown gas. My superhero team are called The Elementals. The superheros are called Magnesia, Nitro Man and Oxside.
Argos
Oxside
Magnesia
Nitro Man
Full transcript