https://padlet.com/joannac261_1/o556nmu6u53mzo20 en-us 2022-09-30 14:57:00 UTC 2025-11-03 06:19:29 UTC hello@padlet.com joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321219940 Atomic number: 57
Family: Lanthanide 
Founder: Carl Gustaf Mosander 
Year of discovery: 1839
Interesting fact: Lanthanum is a metal so soft it can be cut with a butter knife


]]> 2022-09-30 15:15:17 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321219940 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321220644 Atomic number: 21
Family: Transition Metal
Founder: Lars Frederik Nilson
Year of discovery: 1879
Interesting fact: Scandium is the 31st most abundant element on Earth

]]> 2022-09-30 15:15:45 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321220644 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321232723 Atomic number: 4
Family: Alkaline Earth Metal
Founder: Nicolas-Louis Vauquelin 
Year of discovery: 1798
Interesting fact: Beryllium is the 44th more abundant element in the earth's crusts.

]]> 2022-09-30 15:23:12 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321232723 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321245075 Atomic number: 3
Family: Alkali Metal
Founder: Johan August Arfwedson
Year of discovery: 1817
Interesting fact: It is so light it can float on water 
 

]]> 2022-09-30 15:31:09 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321245075 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321249510 Atomic number: 14
Family: Metalloid
Founder: Jöns Jacob Beryzelius
Year of discovery: 1824
Interesting fact: Silicon is the seventh- most abundant element in the universe

]]> 2022-09-30 15:34:23 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321249510 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321254104 Atomic number: 13
Family: Post-Transition Metal
Founder: Hans Christian Ørsted
Year of discovery: 1825
Interesting fact: The world's most abundant metal

]]> 2022-09-30 15:37:32 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321254104 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321256943 Atomic number: 1
Family: Nonmetal
Founder: Henry Cavendish
Year of discovery: 1765
Interesting fact: Scientists estimate that Hydrogen makes up over 90 percent of all the atoms in the universe. ]]> 2022-09-30 15:39:27 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321256943 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321259737 Atomic number: 2
Family: Noble Gas
Founder: Pierre Janssen and Norman Lockyer
Year of discovery: 1868
Interesting fact: Helium atoms are so light that they are able to escape Earth's gravity.]]> 2022-09-30 15:41:27 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321259737 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321264416 Atomic number: 17
Family: Halogen
Founder: Carl Wilhelm Scheele
Year of discovery: 1774
Interesting fact: Chlorine gas appears to be yellow-green in color]]> 2022-09-30 15:44:50 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321264416 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321267711 Atomic number: 92
Family: Actinide
Founder: Martin Heinrich Klaproth
Year of discovery: 1789
Interesting fact: Uranium has the highest atomic weight of all naturally occurring elements. ]]> 2022-09-30 15:47:12 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321267711 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321271007 Atomic number: 39
Family: Transition Metal
Founder: Johan Gadolin
Year of discovery: 1789
Interesting fact: Yttrium can be found in most of the rare earth minerals]]> 2022-09-30 15:49:25 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321271007 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321273703 Atomic number: 11
Family: Alkali Metal
Founder: Humphry Davy
Year of discovery: 1807
Interesting fact: Sodium is less dense than water]]> 2022-09-30 15:51:31 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321273703 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321279664 Atomic number: 12
Family: Alkaline Earth Metal
Founder: Humphry Davy
Year of discovery: 1808
Interesting fact: It is the eighth-most abundant element]]> 2022-09-30 15:53:28 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321279664 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321282444 Atomic number: 8
Family: Nonmetal
Founder: Joseph Priestley
Year of discovery: 1774
Interesting fact: Oxygen gas is colorless, odorless and tasteless ]]> 2022-09-30 15:55:34 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321282444 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321284638 Atomic number: 103
Family: Actinide
Founder: Albert Ghiorso
Year of discovery: 1965
Interesting fact: Lawrencium is a very heavy metal ]]> 2022-09-30 15:57:07 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321284638 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321287157 Atomic number: 68
Family: Lanthanide 
Founder: Carl Gustaf Mosander 
Year of discovery: 1842 
Interesting fact: It is a rare-earth metal

]]> 2022-09-30 15:58:58 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321287157 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321723235 Atomic number: 82
Family: Post- Transition Metal
Founder: Ancient Egyptians
Year of discovery: 7000 BCE
Interesting fact: Lead is a soft, malleable ductile and dense metalic element ]]> 2022-10-01 01:28:22 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321723235 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321732453 Atomic number: 51
Family: Metalloid
Founder: Nicolas Lémery
Year of discovery: 1707
Interesting fact: It is named after the greek words anti and monos to mean "metal not found alone"]]> 2022-10-01 01:51:55 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321732453 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321733722 Atomic number: 6
Family: Nonmetal
Founder:  A.L. Lavosier
Year of discovery: 1789
Interesting fact: Carbon gets its name from the latin word means coal]]> 2022-10-01 01:55:44 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321733722 joannac261_1 https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321734177 Atomic number: 53
Family: Halogen
Founder: Bernard Courtois
Year of discovery: 1811
Interesting fact: Our brains need iodine]]> 2022-10-01 01:57:01 UTC https://padlet.com/joannac261_1/o556nmu6u53mzo20/wish/2321734177