30 most important padlets. by Zion Moore https://padlet.com/301222/edc9y1mahbkx The best padlet ever en-us 2017-04-25 16:32:21 UTC 2025-11-25 23:14:26 UTC hello@padlet.com h 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168165424 hydrogen-Atomic number 1 
Hydrogen is the lightest element.]]> 2017-04-25 16:41:28 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168165424 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168166571 2017-04-25 16:44:54 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168166571 O 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168167552 Oxygen - Atomic number 8 

Oxygen is the third most abundant element found in the sun, and it plays a part in the carbon-nitrogen cycle, one process responsible for stellar energy production. ]]> 2017-04-25 16:47:44 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168167552 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168169205 Al  
Aluminium - Atomic number  13 
Pure aluminium is soft and lacks strength, but alloys with small amounts of copper, magnesium, silicon, manganese, and other elements have very useful properties.]]> 2017-04-25 16:51:54 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168169205 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168170082 2017-04-25 16:55:11 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168170082 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168170974 N 
Nitrogen-Atomic number  7 
Nitrogen makes up about 78% of the atmosphere by volume but the atmosphere of Mars contains less than 3% nitrogen. ]]> 2017-04-25 16:57:56 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168170974 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168429536 2017-04-26 16:30:23 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168429536 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168430249 2017-04-26 16:32:29 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168430249 Au 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168430479 Gold- Atomic number 79 
Most metals are metallic grey or silvery white whereas gold is characteristically a metallic yellow color, in other words gold-colored. 

]]> 2017-04-26 16:33:18 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168430479 Ag 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168432006 Silver-Atomic number 47 
Silver is somewhat rare and expensive, although not as expensive as gold. Slag dumps in Asia Minor and on islands in the Aegean Sea indicate that man learned to separate silver from lead as early as 3000 B.C. Pure silver has a brilliant white metallic lustre.]]> 2017-04-26 16:38:08 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168432006 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168432874 2017-04-26 16:41:02 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168432874 Am 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168433550 Americium-Atomic number 95. 
 Americium is a component of the smoke detector above.


 

]]> 2017-04-26 16:43:03 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168433550 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168434289 2017-04-26 16:45:08 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168434289 Cu 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168434917 Copper-Atomic number 29
Copper appears in the periodic table at the top of Group 11 above silver and gold. ]]> 2017-04-26 16:46:52 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168434917 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168435164 2017-04-26 16:47:36 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168435164 Cr 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168436989 Chromium-Atomic number 24
Chromium is steel-gray, lustrous, hard, metallic, and takes a high polish. Its compounds are toxic. It is found as chromium ore. Siberian red lead (crocodile, Proc 4) is a chromium ore prized as a red pigment for oil paints.


]]> 2017-04-26 16:52:51 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168436989 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168438229 2017-04-26 16:56:16 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168438229 C 301222 https://padlet.com/301222/edc9y1mahbkx/wish/168438698 Carbon-Atomic numbers 6
Carbon is a Group 14 element and is distributed very widely in nature. It is found in abundance in the sun, stars, comets, and atmospheres of most planets. Carbon is present as carbon dioxide in the atmosphere and dissolved in all natural waters.]]> 2017-04-26 16:57:37 UTC https://padlet.com/301222/edc9y1mahbkx/wish/168438698