https://padlet.com/damy2003silva/puoor9jxe0d Made with good vibes en-us 2019-02-25 13:17:32 UTC 2019-02-27 13:42:31 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Ring.png damy2003silva https://padlet.com/damy2003silva/puoor9jxe0d/wish/334852834 Several of the elements have been know in pure for since ancient times ]]> 2019-02-25 14:16:42 UTC https://padlet.com/damy2003silva/puoor9jxe0d/wish/334852834 damy2003silva https://padlet.com/damy2003silva/puoor9jxe0d/wish/334853503 As time passed more elements became isolated throughout the world ]]> 2019-02-25 14:17:49 UTC https://padlet.com/damy2003silva/puoor9jxe0d/wish/334853503 damy2003silva https://padlet.com/damy2003silva/puoor9jxe0d/wish/334853866 The idea of fundamental elements was not yet clearly understood ]]> 2019-02-25 14:18:26 UTC https://padlet.com/damy2003silva/puoor9jxe0d/wish/334853866 damy2003silva https://padlet.com/damy2003silva/puoor9jxe0d/wish/334854642 The 1770s marked a turning point. In precise experiments gases such as oxygen and nitrogen were isolated ]]> 2019-02-25 14:19:43 UTC https://padlet.com/damy2003silva/puoor9jxe0d/wish/334854642 damy2003silva https://padlet.com/damy2003silva/puoor9jxe0d/wish/335865381 In the 1860s a consensus was reached. The elements would be ordered by weight ]]> 2019-02-27 13:31:54 UTC https://padlet.com/damy2003silva/puoor9jxe0d/wish/335865381 damy2003silva https://padlet.com/damy2003silva/puoor9jxe0d/wish/335868413 At the end of the 1800th century noble gases were discovered and William Ramsey said to add them to the table]]> 2019-02-27 13:38:23 UTC https://padlet.com/damy2003silva/puoor9jxe0d/wish/335868413 damy2003silva https://padlet.com/damy2003silva/puoor9jxe0d/wish/335870588 A popular version of the periodic table was put in a textbook in the 1920s ]]> 2019-02-27 13:42:31 UTC https://padlet.com/damy2003silva/puoor9jxe0d/wish/335870588