LORD RAYLEIGH AND WILLIAM RAMSAY by Carol Salas https://padlet.com/carolsaslas/jt2gdnuqy418 Hecho con un poco de travesura en-us 2019-01-24 16:26:55 UTC 2023-02-13 06:34:14 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Dootheets.png Lord Rayleigh https://padlet.com/carolsaslas/jt2gdnuqy418/wish/324004704 In 1832 it was investigated and an investigation was made in which it was explained that there was a difference in the weight of the nitrogen synthesized in the laboratory and the nitrogen obtained from the air, once the other components were isolated. Ten years later, in 1904, Sir William Ramsay himself won the Nobel Prize in Chemistry for the discovery of "noble gases" such as argon, neon, xenon or krypton. Years later, I discovered that the argument already exists a different explanation so that nitrogen has a different density than other gases. ]]> 2019-01-24 16:33:21 UTC https://padlet.com/carolsaslas/jt2gdnuqy418/wish/324004704 William Ramsay carolsaslas https://padlet.com/carolsaslas/jt2gdnuqy418/wish/324009676  He was curious about the observation that density of nitrogen extracted from the air was always greater than nitrogen released from various chemical compounds. 
Then he looked for an unknown gas with greater density, then called it argon. Next he discovered helium, and suggested a new group if elements.
He suggested it because he see that they weren't (at all) metallic and according to the direction of metallic elements and the atomic number ordered them in the periodic table.

Science History Institute (2017) William Ramsey. Retrieved from https://www.sciencehistory.org/historical-profile/william-ramsay.
]]> 2019-01-24 16:39:49 UTC https://padlet.com/carolsaslas/jt2gdnuqy418/wish/324009676 Noble gasses carolsaslas https://padlet.com/carolsaslas/jt2gdnuqy418/wish/324012697 Noble gases are a set of chemical elements with similar characteristics. They are located in group 18 (VIIIA) 1 of the periodic table.]]> 2019-01-24 16:43:40 UTC https://padlet.com/carolsaslas/jt2gdnuqy418/wish/324012697 carolsaslas https://padlet.com/carolsaslas/jt2gdnuqy418/wish/324012971 The noble gases are helium, argon, neon, xenon, krypton and the radioactive radon.
Under normal conditions, they are odourless, colourless monoatomic gases with very low chemical reactivity.

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