[DOC] [TLE] Hydrogen(H) is a gas, and is the first element on the periodic table. It ... [PAR] is orderless, colorless, tasteless, and nonmetallic element with the atomic 1, and 
it's also roughly 75% ... Hydrogen, or H2, is an elemental gas present in a trace 
amount in earth s atmosphere. ... makes up about 75 percent of the universe's 
elemental mass. ... our stars but it is rare on Earth and must be made from fossil 
fuels. [DOC] [TLE] Abundance of the chemical elements - Wikipedia [PAR] The abundance of a chemical element is a measure of the occurrence of the 
element relative to all other elements in a given environment. Abundance is 
measured in one of three ways: by the mass-fraction (the .... Hydrogen and 
helium are estimated to make up roughly 74% and 24% of all .... 75, rhenium, Re, 
0.08, 10. [DOC] [TLE] Elements in the Earth's Crust - Windows to the Universe [PAR] Together, these 8 elements make up more than 98% of the crust. The 8 most 
common elements in Earth's crust (by mass): 46.6% Oxygen (O) ... There are lots 
of rocks in Antarctica, but the one that scientists just found is special. It may 
provide... [DOC] [TLE] Hydrogen-Helium Abundance - HyperPhysics [PAR] There is a window of uncertainty, but it is clear that hydrogen and helium make 
up 98% plus of the ordinary matter in the universe. This high percentage of... [DOC] [TLE] What is the most abundant element? - Antoine [PAR] On earth, oxygen is the most common element, making up about 47% of the ... All 
of the remaining elements together make up less than 1% of the earth's mass. ... 
block of the universe is hydrogen because it's the most plentiful element, but my... [DOC] [TLE] FORMATION OF THE HIGHER MASS ELEMENTS [PAR] Once the universe was created by the Big Bang, the only abundant elements 
present ... by which a star "shines" higher mass elements were formed inside the 
stars. ... Gravity creates a force that would cause a star to shrink and collapse, but 
the ... Their relative abundance (by weight) was 75% hydrogen and 25% helium. [DOC] [TLE] Hydrogen - New World Encyclopedia [PAR] Hydrogen is the most abundant element in the universe, making up 75 percent of 
normal matter by mass and over 90 percent by number of atoms. This element... [DOC] [TLE] Why did the Universe start off with Hydrogen, Helium, and not much ... [PAR] Jul 5, 2013 ... But here on Earth, hydrogen and helium are only a small part of the world we 
inhabit. By mass, hydrogen and helium combined make up far less than 1% of 
the ... it's still just a tiny percentage compared to the other, heavier elements. .... a 
total of 24-to-25% of the mass, leaving 75-to-76% of the Universe as... [DOC] [TLE] Chemical Universe. - Astronomy - The University of Texas at Austin [PAR] Page 1 ... most of the elements of the periodic table have their .... makes up about 
75 percent of normal matter .... Earth, but containing most of the star's mass. [DOC] [TLE] Our Expanding Universe: Age, History & Other Facts - Space.com [PAR] Jan 13, 2015 ... The universe was born with the Big Bang as an unimaginably hot, dense point. ... 
inflation the growth of the universe continued, but at a slower rate. ... During the 
first three minutes of the universe, the light elements ... Of the remainder, 23 
percent is made up of dark matter, which is likely composed of one or... [DOC] [TLE] What Percent of Earth is Water? - Universe Today [PAR] But how much of our planet is made up of water, exactly? ... of the oceans on 
Earth is 1.35 x 1018 metric tonnes, which is 1/4400 the total mass of the Earth. [DOC] [TLE] What is the Earth's Mantle Made Of? - Universe Today [PAR] Mar 25, 2016 ... The Earth's layers, showing the Inner and Outer Core

Question: This element makes up about 1 percent of the mass of Earth but about 75 percent of the mass of the universe
Answer: hydrogen