Helium - Research Article from World of Chemistry

This encyclopedia article consists of approximately 2 pages of information about Helium.
This section contains 500 words
(approx. 2 pages at 300 words per page)
Buy the Helium Encyclopedia Article

Properties

Helium is a colorless, odorless, tasteless gas with a number of unusual properties. For example, it has the lowest boiling point of any element, -452°F (-268.9°C). Its freezing point is -458°F (-272.2°C). At a temperature of about -456°F (-271°C), helium undergoes a striking change. It remains a liquid, but a liquid with unusual properties. One of the most interesting of those properties is superfluidity, a condition in which a liquid flows upwards out of a container against the force of gravity and may pass through very small holes that would normally be impermeable to the gas. Chemically, helium is completely inert. It does not form compounds or react with any other element.

Occurrence and Extraction

Helium is the second most abundant element after hydrogen in the universe and in the solar system. About 11.3% of all atoms...

(read more)

This section contains 500 words
(approx. 2 pages at 300 words per page)
Buy the Helium Encyclopedia Article
Copyrights
World of Chemistry
Helium from World of Chemistry. ©2005-2006 Thomson Gale, a part of the Thomson Corporation. All rights reserved.
Follow Us on Facebook