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Tag Archives: Mendeleev

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Organize the Elements: Periodic Table

ScienceBy William Anderson (Schoolworkhelper Editorial Team)August 18, 20103 Comments

In the mid-1800s there were 64 known elements (today there are over 116 elements).  Scientists kept having difficulties organizing the information about the 64 elements.  They kept trying to organize them but found no pattern between them. Many chemicals have very similar colors, luster, and conductivity of electricity and heat. Scientists were able to classify…

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