HYDROGEN BY: YJ HAN 7.1.

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Presentation transcript:

HYDROGEN BY: YJ HAN 7.1

THE ELEMENT Name of the element: Hydrogen Symbol: H Atomic Number: 1 Melting point: -259.2°C Boiling point: -252.762°C Metal or Non-metal: Non-metal Date of discovery and discoverer: Henry Cavendish, 1766

A Brief Description Hydrogen is a gas with no color, no smell and also hydrogen is inflammable. Hydrogen is also very light and scattered. If the hydrogen is not combined with other substances, it can escape our atmosphere. When hydrogen is burnt, it turns usually to water. Sometimes it turns to nitrogen but it has to be controlled.

Hazardous effects on animals and the environment When hydrogen is combined with chlorine, it turns to hydrochloric acid. And the acid can turn very hazardous to the animals, people and the environment. It can damage the skin, eyes and the membranes, esophagus and the stomach. Which causes vomiting, diarrhea and nausea.

3 uses of hydrogen In petroleum and chemical industries, hydrogen is used for improving crude oil for better use. Hydrogen is also used with foods for oil and fats. Hydrogen was also used as gas in the early 20th centuries.

3 interesting facts Hydrogen is the lightest element. The atomic weight for hydrogen is only 1.00794. Hydrogen can happen in volcanic gases and some natural gas In room temperature, hydrogen is colorless and odorless.

Check this out! About 75% of the world’s element mass is hydrogen! Hydrogen gases can catch fire and burns easily! It was used as a space shuttle engine. And hydrogen caused the explosion of the Hindenburg airship!

Hydrogen is a no color, no smell, flammable gas Picture Hydrogen is a no color, no smell, flammable gas

Bibliography - Anne Marie Helmenstine, PH.D, Hydrogen facts, About.com:Chemistry, 21/04/10 (http://chemistry.about.com/od/elementfacts/a/hydrogen.htm) Michael Anissimov, What are some uses of hydrogen?, wise GEEK, 25/04/10 (http://www.wisegeek.com/what-are-some-uses-of-hydrogen.htm) Hydrochloric Acid (Hydrogen Chloride), Technology Transfer Network Air Toxics Website, 25/04/10 (http://www.epa.gov/ttn/atw/hithef/hydrochl.html) Hydrogen, Hydrogen, 25/04/10 (http://www-formal.stanford.edu/jmc/progress/hydrpgen.html)