Hydrogen-Abigail

=__ Hydrogen (H) __ =

** What is Hydrogen? ** Hydrogen is the first element in the periodic table, the most basic of all elements. Normally, it is colorless, odourless, and insipid gas. It is formed by diamotic molecules, H2.

** Hydrogen Data ** Atomic Number : 1 Atomic Mass : 1,00794amu Melting Point : -259,14° C Boiling Point : -252,87° C Numbers of Protons : 1 Number of Neutrons : 0 Classification : Non-metal Number of Energy Levels: 1 Date of Discovery : 1766 Discoverer : Henry Cavendish Name of Origin : From the Greek words hudor (water) and gennan (generate) Obtained from : Mines, oils, gas wells Isotopes : Mass 1 = protium, found in more than 99,985% of the element Mass 2 = deuterium, found in nature by 0,015% Mass 3 = tritium, appears in small quantities of nature

**3 Uses of Hydrogen** 1) The most imortant use of hydrogen is the ammonia synthesis. 2) Hydrogen is also used in extending quickly in fuel refinement. 3) Other than that, huge quantities of hydrogen, in combination with oxygen and fluor, are used as rocket fuels and as a rocket propellent, propelled by nuclear energy .

**Hazardous Effect of Hydrogen on Humans** Hydrogen itself is not dangerous, but when combined with other elements, such as oxygen, sulphide, and cyan, it can be highly toxic.

Hydrogen peroxide is a manufactured chemical. At room temperature, it is a colorless liquid with a bitter taste. It is unstable, ready to decompose oxygen and water while producing heat. Although it is non-flammable, it is a powerful oxidizing agent that can cause spontaneous combustion when it comes in cantact with organic materials.

Hydrogen peroxide can be toxic if digested, inhaled, or have contact with the skin or eyes. Inhalation of: - household strength (3%) peroxide can cause respiratory irritation. - vapors from concentrated solutions (higher than 10%) may result to severe pulmonary irritation. Digestion of: - dilute solutions (3%) of hydrogen peroxide may cause vomiting, mild gastrointestinal irritation, and gastric distention. - solutions with 10%-20% strength causes similar effects, but exposed tissues may also be burned. - even more concentrated solutions may result to all the effects above, added with rapid loss of conciousness, and respiratory paralysis. Exposure of: - 3% hydrogen peroxide to the eye may cause pain and irritation. - more concentrated solutions may result to the ulceration or perforation of the cornea. Skin Contact of: - 3% of hydrogen peroxide can cause irritation and temporary bleaching of the skin and hair. - more concentrated solutions can result severe skin burns and blisters.

**3 Interesting Facts About Hydrogen** 1) Hydrogen is the oldest element in the universe, formed between 3 and 20 minutes after the big bang. 2) Hydrogen is the most abundant chemical element in the universe, consisting of about 75% in the universe's elemental mass. 3) Hydrogen bonds with most elements, most compounds have hydrogen as one of its elements.



Information ** Bentor, Yinon. "Hydrogen." __Elements__. 22 April 2010  "Hydrogen." __Elements__. 22 April 2010  "Hydrogen Peroxide." __Tox FAQs__. 25 April 2010  "Interesting Facts About Hysrogen (H)." __Info Barrel__. __chel_0001_0002_0_img0189__. <http://chemistryexplained.com/elements/images/chel_0001_000_0_img0189.jpg> __Hydrogen__. 25 April 2010 <http://z.about.com/d/chemistry/1/0/u/P/hydrogen.jpg> __Hydrogen_1__. 25 April 2010 <http://www.green-planet-solar-energy.com/images/hydrogen_1> __Hydrogen2__. 25 April 2010 <http://library.thinkingquest.org/C00585/hydrogen2.jpg>
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