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Concept artwork on the periodic table of elements.
118 Names and Symbols of the Periodic Table Quiz
Periodic Table of the elements concept image (chemistry)
Facts You Should Know: The Periodic Table Quiz
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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
Ahura Mazda - relief of the Zoroastrian god Ahura Mazda at the ancient ruins of Persepolis in Iran. Also known as Ormazd Zoroastrianism,
Which Religion Is the Oldest?
Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)
7 of the World’s Deadliest Shipwrecks
Nero (Nero Claudius Caesar Augustus Germanicus) (ad 50-54) the fifth Roman emperor (ad 54-68), stepson and heir of the emperor Claudius.
Did Nero Really Fiddle as Rome Burned?
Set of emoticon. Smile icon set.
What’s the Difference Between Emoji and Emoticons?
United States electoral college map showing number of electoral votes by state.
How Does the Electoral College Work?
Snowshoe hare (Lepus americanus) with its Summer coat on the left side and its winter coat on the right.
7 Animals That Turn White in Winter

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Key People

William Hyde Wollaston, detail of a pencil drawing by J. Jackson; in the National Portrait Gallery, London
William Hyde Wollaston
British scientist
Adams, Roger
Roger Adams
American chemist

Related Quizzes and Features

Quiz
Concept artwork on the periodic table of elements.
118 Names and Symbols of the Periodic Table Quiz
Periodic Table of the elements concept image (chemistry)
Facts You Should Know: The Periodic Table Quiz