A highly reactive group of metals that make up group one in the periodic table.
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What are alkali metals? Why are they so reactive? What are the trends as you go down the group? How do they react with water, oxygen and chlorine? Learn all this and more!

Learn about the Periodic Table of elements and the group alkali metals with Alkali Metals Song Periodic Table by KLT

This nugget justifies the position of Hydrogen in the modern periodic table and discusses the occurrence of isotopes of Hydrogen.

How did scientists make sense of the characteristics of elements? What is the periodic table? How are elements classified? What are the major categories of elements? What are exceptions regarding the periodic table?

Periodic Table...