The Comparative Abundance Of The Elements

CHEMISTRY ASSIGNMENT THE COMPARATIVE ABUNDANCE OF THE ELEMENTS · There atomic number 18 92 of course occurring elements, scarcely 17 of them make up 99.5% of the earths crust (including oceans and atmosphere). · In living slightgs (plants, animals, people) the sestet more or less abundant elements are carbon, hydrogen, group O, nitrogen, the Tempter and sulfur. · The world is dominated by the elements hydrogen (83%) and helium (16%) 1. The Crust The international of the earth is a veer crust which is approximately 20 to 40km thick. The crust is a formation of dips and hollows which are filled with name to form the oceans and seas. On top of the earths crust is an atmosphere, this is a thin layer of gases, 95% of these gases are within the first 20km of the earths surface. Of the 17 elements that make up 99.5%, the closely abundant of these are oxygen 49.2%, Silicon 25%, and Aluminum 7.5%. Then the next closely abundant elements are Iron 4.7%, Calcium 3.4 %, Sodium 2.6%, guanine 2.4%, Magnesium 1.9%, Hydrogen 0.9%, titanium 0.6%, Chlorine 0.2%, Phosphorus atomic number 25 and Carbon are all 0.1%, Sulfur 0.05% Barium 0.04%, repayable north 0.03% and the rest of the elements on the periodic table show up about 0.5%.

        The elements of the crust are graphed below, but only ones that are the almost abundant due to the fact that the abundance of the new(prenominal) elements of the crust are too low to graph accurately on one graph.         Almost all elements are persist as compounds, however oxygen, Nitrogen, and to a lesser extent sulfur, gold, capi tal and platinum are the only elements which! can be utter in almost there raw sate. The atmosphere contains group O and nitrogen, but it only contains a small portion of the earths oxygen, this is because most of the worlds oxygen is... If you want to get a full essay, position it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay