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400
The birth of alchemy-Middle ages
Dark Ages (historiography), the concept of a period of intellectual darkness and economic regression that occurred in Europe following the collapse of the Western Roman Empire -
Period: 400 to
The story of the elements.Dark ages untill today
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Sep 19, 1058
Alchemy in the Islamic world.
After the fall of the Roman Empire, the focus of alchemical development moved to the Islamic World. Much more is known about Islamic alchemy because it was better documented: indeed, most of the earlier writings that have come down through the years were preserved as Arabic -
Sep 19, 1580
Alchemy in the early stages.
The alchemical laboratory—because it had the power to separate precious metals from the baser ones they are typically found with—became an essential feature of the metallurgical enterprise. As the science of matter, alchemy had a wide range of applicability: from the chemical analysis and separation of alloys, to the preparation of powerful corrosives, to the distillation of spirituous essences and delicate oils, to the manufacture of dyes, to the preparation of powerful new medicines. -
Phosphorous sulfur
by H.Brand -
Nitrogen
by D.Rutherford -
Magnesium
by J.Black -
Hydrogen
by H.Cavendish -
Oxygen
by C.W.Scheele -
Chlorine
by C.W.Scheele -
Beryllium
by L.N.Vauquelin -
Sodium
by H.Davy -
Boron,carbon
by J.L.Gay-Lussac & L.J.Thénard -
Lithium
by J.A.Arfwedson -
Silicon
by J.J.Berzelius -
Aluminum
by H.C.Ørsted That weird Ø sign is O in English but this is how u write e nam) -
Johann Wolfgang Döbereiner discovers the first elements.
chlorine, bromine, and iodine
calcium, strontium, and barium
sulfur, selenium, and tellurium
lithium, sodium, and potassium -
Helium
by P.Janssen & J.N.Lockyer -
Fluorine
by H.Moissan -
Argon
by Lord Rayleigh & W.Ramsay -
J.J Thompson
He came up with the idea of the atom model -
Neon
by W.Ramsay & M.W.Travers -
Niels Bohr
He organized the electrons into shells(orbitals) -
Enrico Fermi
He suggested how to make new elements with atoms larger than the heaviestnaturally occuring atoms of uranium(atomic number 92) -
The cold War
When the nuclear bombs hit Japan a new element was discoverd.Element 93 -
New ellements
The new elements 94 to 101
