silica

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Why some volcanic eruptions are more explosive than others

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Aspirin pills.

7 Drugs that Changed the World

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society

12 Novels Considered the “Greatest Book Ever Written”

Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar

Ten Days That Vanished: The Switch to the Gregorian Calendar

Portrait of a mountain gorilla at a short distance. gorilla close up portrait.The mountain gorilla (Gorilla beringei beringei)

Falling Stars: 10 of the Most Famous Endangered Species

Happy, smiling, flying pig

7 Everyday English Idioms and Where They Come From

Internet http://www blue screen. Hompepage blog 2009, history and society, media news television, crowd opinion protest, In the News 2009, breaking news

Who Invented the Internet?

silica: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Facts

Also Known As	silicon dioxide

Photos and Videos

Why some volcanic eruptions are more explosive than others

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Topics

silica mineral silica gel keatite alumina zirconia silica silicosis phytolith tabashir oxide water sulfur oxide quicklime alumina titanium dioxide oxide mineral sulfoxide peroxide vanadic anhydride zirconia

Key People

Jean-Charles Galissard de Marignac

Swiss chemist