Tungsten Essential Question
In 1556 a man named Georgius Agricola founded the element today known as wolframite. Later in 1664, a chemist named Johann Gottlieb Lehmann was studying the element wolframite in his lab and in one of his experiments he fused the mineral with sodium nitrate and ore. The element dissolved in water forming a green solution which began to turn red. He then added the mineral acid, hydrochloric acid, which after some time precipitated a spongy white substance and soon turned yellow after some time. Lehmann reported that the mixture of those mineral resulted in the yellow color because he had mixed iron and zinc. A couple of years later in 1779, Peter Woulfe was studying Lehmann’s work and he decided to infuse it with salt and he too found that it resulted in salt which meant he might have came across a new element. Three years later the chemist Carl Wilhelm Scheele examined the white mineral and he named it Tungsten and proved that because of the salt, it......

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Title: Tungsten Essential Question
Approximate Word Count: 544
Approximate Pages: 3 (250 words per double-spaced page)

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