Get to know the elements
In case you missed it, has marked 2019 as the International Year of the Periodic Table of Chemical Elements to raise awareness of chemistry and its application for sustainable development. It also celebrates the 150th anniversary of the discovery of the periodic system by scientist Dmitry Mendeleev in 1869.
Considered one of the most significant achievements in science, the Periodic Table is a tool that scientists and students can use to understand the characteristics of an element from its position on the table, and indeed predict the properties of molecules and materials.
Chemistry lecturer, researcher and science communicator , has taken to Twitter to share interesting facts about each of the elements for the first 118 days of the year.
There鈥檚 already a month worth of tweets for you to catch up on, but here are a few to get you started.
Happy New Year! 2019 marks the International Year of the Periodic Table. It鈥檚 150 years since the periodic system was developed by Dmitry Mendeleev in 1969 and there's lots to celebrate. if you're already a fan馃檶 or not yet convinced 馃 keep an eye on this hashtag 1/n
— Dr Alice Motion 馃寛 (@all_isee)
He: #2 - 2nd most abundant element in universe after H. Helium glows red/orange when 鈿★笍 is passed through it. Best known for its use in balloons, a much 'cooler' application is as a liquid at -270 藲C, when it can be used to cool down superconducting magnets needed in MRI machines
— Dr Alice Motion 馃寛 (@all_isee)
Ne: #10 - very unreactive. Neon is extracted from air cooled until liquid and then fractionally distilled. Probably best known for its use in 'Neon' signs - only the red ones are actually pure Ne. Liquid Ne is an excellent refrigerant. 馃摳 by Tim Mossholder on
— Dr Alice Motion 馃寛 (@all_isee)
K: #19 - burns with lilac 馃敟. Potassium is named after early method for extraction of its salts: 鈥榓sh鈥� from 馃尦 heated in 鈥榩ot鈥� of water and resulting solution evaporated - 鈥榩otash鈥�. K+ ions are found in every cell. 11 馃崒 contain recommended daily K intake. 馃摳 Tim Foster
— Dr Alice Motion 馃寛 (@all_isee)
Cr: #24 - compounds frequently toxic. Chromium is named after the Greek word for colour 'chroma'. Cr compounds are used as pigments (red, orange, yellow and green) and traces of Cr are responsible for the red colour of rubies and green of emeralds. 馃摳 Wladislav Glad
— Dr Alice Motion 馃寛 (@all_isee)
Mendeleev published the Periodic Table with known elements arranged in order of atomic mass. He also predicted the discovery of other elements and left spaces聽open for them on the table.
Ga: #31 - existence predicted by Mendeleev. Gallium was discovered in Paris by Lecoq de Boisbaudran and named after 馃嚝馃嚪 'Gaul' and Lecoq (Gallus in Latin). Ga is used in semiconductors, mobile phones and LEDS. Expands ~3% when frozen and melts ~30 deg. 馃摳Mathew Schwartz
— Dr Alice Motion 馃寛 (@all_isee)
This is just the beginning of our #IYPT2019 celebrations, keep an eye out for an exciting on campus event which will be part of National Science Week at the University of Sydney.
Follow to learn more about each of the elements as she continues to share her daily tweets.
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