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The Comparative Abundance Of The Elements
Title: The Comparative Abundance Of The Elements
Category: Science & Technology / Chemistry
Details: Words: 541 | Pages: 2.3 (approximately 235 words/page)
The Comparative Abundance Of The Elements
CHEMISTRY ASSIGNMENT THE COMPARATIVE ABUNDANCE OF THE ELEMENTS · There are 92 naturally occurring elements, only 17 of them make up 99.5% of the earth's crust (including oceans and atmosphere).
· In living things (plants, animals, people) the six most abundant elements are carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur.
· The universe is dominated by the elements hydrogen (83%) and helium (16%) 1. The Crust The outside of the earth is a thin crust which is approximately 20 to 40km thick. The crust is …showed first 75 words of 541 total…
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…showed last 75 words of 541 total…is dominated by the elements hydrogen 83%, and helium 16%. Other elements in the universe are oxygen 0.1%, carbon 0.03%, nitrogen 0.01%, silicon magnesium and neon are all about 0.003% of the elements in the universe. The abundance of hydrogen and helium in this cosmic distribution of the elements, proves all the elements were formed by nuclear fusion in the stars, for example the Sun. Hydrogen is a basic material for which the other elements are gradually built.
By Derrick Deacon
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