30 most important pad let by Jullian Gonzalez https://padlet.com/301104/cruz Made with a creative frenzy en-us 2017-04-25 16:33:12 UTC 2017-04-26 17:01:09 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Terminator.png hydrogen 301104 https://padlet.com/301104/cruz/wish/168168147
Hydrogen is a chemical element with chemical symbol H and atomic number 1. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table.]]> 2017-04-25 16:49:15 UTC https://padlet.com/301104/cruz/wish/168168147 Helium 301104 https://padlet.com/301104/cruz/wish/168428796 Helium is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monotonic gas, the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements]]> 2017-04-26 16:28:08 UTC https://padlet.com/301104/cruz/wish/168428796 Lithium 301104 https://padlet.com/301104/cruz/wish/168430412 Lithium is a chemical element with the symbol Li and atomic number 3. It is a soft, silver-white metal belonging to the alkali metal group of chemical elements. Under standard conditions, it is the lightest metal and the least dense solid element. ]]> 2017-04-26 16:33:02 UTC https://padlet.com/301104/cruz/wish/168430412 Carbon/ is a chemical element with symbol C and atomic number 6. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. 301104 https://padlet.com/301104/cruz/wish/168432002 2017-04-26 16:38:07 UTC https://padlet.com/301104/cruz/wish/168432002 Nitrogen/ Nitrogen is a chemical element with symbol N and atomic number 7. It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772 301104 https://padlet.com/301104/cruz/wish/168432398 2017-04-26 16:39:24 UTC https://padlet.com/301104/cruz/wish/168432398 Oxygen/Oxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table and is a highly reactive nonmetal and oxidizing agent that readily forms oxides 301104 https://padlet.com/301104/cruz/wish/168432748 2017-04-26 16:40:38 UTC https://padlet.com/301104/cruz/wish/168432748 Fluorine/Fluorine is a chemical element with symbol F and atomic number 9. It is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. 301104 https://padlet.com/301104/cruz/wish/168433102 2017-04-26 16:41:39 UTC https://padlet.com/301104/cruz/wish/168433102 Neon 301104 https://padlet.com/301104/cruz/wish/168434669 Neon is a chemical element with symbol Ne and atomic number 10 and is a noble gas. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.]]> 2017-04-26 16:46:08 UTC https://padlet.com/301104/cruz/wish/168434669 Sodium 301104 https://padlet.com/301104/cruz/wish/168435501 Sodium is a chemical element with symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal]]> 2017-04-26 16:48:38 UTC https://padlet.com/301104/cruz/wish/168435501 Magnesium 301104 https://padlet.com/301104/cruz/wish/168436357 Magnesium is a chemical element with symbol Mg and atomic number 12. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column of the periodic ]]> 2017-04-26 16:50:55 UTC https://padlet.com/301104/cruz/wish/168436357 Aluminum 301104 https://padlet.com/301104/cruz/wish/168436877 Aluminium or aluminum is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal.]]> 2017-04-26 16:52:32 UTC https://padlet.com/301104/cruz/wish/168436877 Silicon 301104 https://padlet.com/301104/cruz/wish/168437542 Silicon is a chemical element with symbol Si and atomic number 14. A hard and brittle crystalline solid with a blue-gray metallic luster, it is a tetravalent metalloid.]]> 2017-04-26 16:54:21 UTC https://padlet.com/301104/cruz/wish/168437542 Phosphorus 301104 https://padlet.com/301104/cruz/wish/168438006 Phosphorus is a chemical element with symbol P and atomic number 15. As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but because it is highly reactive, phosphorus is never found as a free element on Earth]]> 2017-04-26 16:55:39 UTC https://padlet.com/301104/cruz/wish/168438006 Sulfur 301104 https://padlet.com/301104/cruz/wish/168438867 Sulfur or sulphur is a chemical element with symbol S and atomic number 16. It is abundant, multivalent, and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S₈.]]> 2017-04-26 16:58:09 UTC https://padlet.com/301104/cruz/wish/168438867 Chlorine 301104 https://padlet.com/301104/cruz/wish/168439641 Chlorine is a chemical element with symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them. ]]> 2017-04-26 17:00:35 UTC https://padlet.com/301104/cruz/wish/168439641