Hydrogen

by Mike Shea

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the atomic number equals the number of protons the atomic mass numberequals the number of protons and neutrons.

Discovery

hydrogen was first disocved in 1776 by Henry Cavendish he also discovered that hydrogen creats water when burned.
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it is in the first period of the alkali metals group.

relaitve abundance and recyclaclbleity

it can be recycled and is often used as an alternative fuel and cooking oil,

Estimated Crustal Abundance: 1.40×103 milligrams per kilogram

citing

"The Element Hydrogen." It's Elemental -. N.p., n.d. Web. 20 Feb. 2013. http://education.jlab.org/itselemental/ele001.html.


"Hydrogen Facts - Gas, Atom, Uses, Properties, Element H, Fuel Cell Car Engine." Hydrogen Facts - Gas, Atom, Uses, Properties, Element H, Fuel Cell Car Engine. N.p., n.d. Web. 20 Feb. 2013. <http://www.sciencekids.co.nz/sciencefacts/chemistry/hydrogen.html>.