https://padlet.com/emilyspellman/q8ie9fyoutby By: Emily Spellman en-us 2017-10-27 00:04:07 UTC 2026-03-11 02:28:52 UTC hello@padlet.com https://rlv.zcache.com/element_002_he_helium_full_postcard-r2406e252d4104b27a585c60782811726_vgbaq_8byvr_324.jpg emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201062207 Helium was discovered by a French astronomer named Pierre Jules César Janssen. He noticed there was a yellow line in the sun's spectrum while he was studying a total solar eclipse in 1868. At first, he thought it was sodium (due to the fact that it was between the D1 and D2 Fraunhofer lines). A couple months later, another scientist named Norman Lockyer noticed the same yellow line and realized it was an unknown element, not sodium. Helium had then got it's name from the Greek word "helios," meaning sun because it was first discovered on the sun. It wasn't discovered on Earth until many years later.]]> 2017-10-27 01:02:33 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201062207 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201072181 Symbol: He
Atomic Number: 2
Atomic Mass: 4.0026]]> 2017-10-27 02:22:13 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201072181 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201072594 2017-10-27 02:25:34 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201072594 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201073668 2017-10-27 02:35:47 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201073668 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201073723 Even though helium is the "second most abundant element in the universe," it is actually very hard to find. Helium is found in many different parts of the world, but in the USA, it's found a lot in Texas. This natural gas is dug up from the ground. A drill rig is used to let the gas underground rise to the top. It goes through many pipes, getting separated from other gases. It is then put into a container to cool down until it liquifies.]]> 2017-10-27 02:36:17 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201073723 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201074985 https://sciencing.com/helium-mined-8694777.html
http://askzephyr.com/15-uses-for-helium-you-never-knew/
http://www.rsc.org/periodic-table/element/2/helium
https://www.chemicool.com/elements/helium-facts.html
https://sciencenotes.org/helium-facts/]]> 2017-10-27 02:49:24 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201074985 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201076062 Helium is displayed in the nonmetal group, and was the first of the noble gases. It is also in group 18.]]> 2017-10-27 03:00:30 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201076062 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201077122 2017-10-27 03:09:36 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201077122 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201077716 Melting Point: 0.95 K ​(−272.20 °C, ​−457.96 °F)
Boiling Point: 4.222 K ​(−268.928 °C, ​−452.070 °F)
Density: 0.1786 g/L
Abundance in the Earth's Crust: 5.5×10^-7%]]> 2017-10-27 03:14:16 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201077716 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201079303 1) Apollo 13
2) Internet
3) SCUBA diving
4) Superconducting magnet in MRI
5) Fill balloons (decorative, weather, and airships)
6) Helium lasers for scanning barcodes at checkouts
7) Microscopes
8) Computer hard drives
9) Steering wheels
10) Keeps satellite instruments cool
11) Treats asthma 
12) Makes your voice higher
13) etc]]> 2017-10-27 03:31:36 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201079303 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201339616 Helium has two isotopes (gas and liquid). “It consists almost entirely of He-4 with natural He only containing just over 0.0001% of He-3.”]]> 2017-10-27 19:15:26 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201339616 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201340736 Helium is not reactive, reactive, colorless, and odorless. It has the lowest melting point]]> 2017-10-27 19:19:29 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201340736 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201839646 2017-10-30 17:22:06 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201839646 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201972087 With helium being the 2nd most abundant element, it’s bound to be used in many things. Without helium, things such as steering wheels and the Internet would not be possible. There are so many things in your daily life that requires helium. Although it is very rare, it’s important characteristics lead to people finding more ways to extract it for it’s special needs. ]]> 2017-10-31 00:36:38 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/201972087 emilyspellman https://padlet.com/emilyspellman/q8ie9fyoutby/wish/202006692 2017-10-31 04:37:11 UTC https://padlet.com/emilyspellman/q8ie9fyoutby/wish/202006692