https://padlet.com/3015481/jojj2v4sgnq6 en-us 2017-04-25 15:33:58 UTC 2025-08-14 15:09:30 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Rafaelo.png 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168147606 Mercury is a chemical element with symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum]]> 2017-04-25 15:45:30 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168147606 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168148569 Iron is a chemical element with symbol Fe and atomic number 26. It is a metal in the first transition series.]]> 2017-04-25 15:48:08 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168148569 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168148962 Oxygen is a chemical element with symbol O and atomic number 8. ]]> 2017-04-25 15:49:14 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168148962 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168149800 Carbon is a chemical element with symbol C and atomic number 6. It is nonmetallic and trivalent—making four electrons available to form covenant chemical bonds.]]> 2017-04-25 15:51:38 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168149800 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168150276 The only element named after a cooking utensil. It was named in 1807 by Humphrey Davy after the compound from which he isolated the metal, potash, or potassium hydroxide.]]> 2017-04-25 15:53:15 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168150276 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168152046 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]]> 2017-04-25 15:58:45 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168152046 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168153511 Californium is a radioactive metallic chemical element with symbol Cf and atomic number 98. The element was first made in 1950 at the University of California Radiation Laboratory in Berkeley, by bombarding curium with alpha particles.]]> 2017-04-25 16:03:54 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168153511 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168408032 Californium is a radioactive metallic chemical element with symbol Cf and atomic number 98.]]> 2017-04-26 15:28:17 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168408032 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168409428 Silver is the metallic element with the atomic number 47. ]]> 2017-04-26 15:32:27 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168409428 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168410492 Nitrogen is a chemical element with symbol N and atomic number 7.]]> 2017-04-26 15:35:41 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168410492 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168411410 Helium is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. ]]> 2017-04-26 15:38:27 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168411410 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168414129 Copper is a chemical element with symbol Cu and atomic number 29.]]> 2017-04-26 15:44:23 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168414129 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168415969 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 15:49:55 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168415969 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168419734 Gold is a chemical element with symbol Au and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. ]]> 2017-04-26 16:00:50 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168419734 3015481 https://padlet.com/3015481/jojj2v4sgnq6/wish/168421155 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]]> 2017-04-26 16:05:05 UTC https://padlet.com/3015481/jojj2v4sgnq6/wish/168421155