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ChemistryThe Periodic Table of Elements V
The periodic table allows us to easily view the 118 known chemical elements according to...
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Earth ScienceIdentifying Minerals
Minerals are classified on the basis of their chemical composition, which is expressed in their...
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ChemistryThe Periodic Table of Elements I
The modern periodic table is based on Dmitri Mendeleev’s 1896 observations that chemical elements can...
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