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Chemistry Facts

Nitrogen Gas and Compounds

Nitrogen is a very interesting element. It is the seventh element of the periodic table, with seven electrons in its atoms. The somewhat unique combination of electronic structure and small atomic ... Continue reading

Certain crops help the nitrogen cycle.

When Chlorine Met Sodium...

Sodium is a required element in human physiology. The eleventh element in the periodic table, sodium is a soft, silvery white metal that can be easily cut through with a paring knife. It is highly ... Continue reading

A crystal of sodium chloride.

What Is Arsenic?

Arsenic is a naturally occurring element widely distributed in the earth's crust. In the environment, arsenic is combined with oxygen, chlorine, and sulfur to form inorganic arsenic compounds. Arsenic ... Continue reading

Hydrogen - The Simplest Element

Hydrogen is the simplest element; an atom consists of only one proton and one electron. It is also the most plentiful element in the universe. Despite its simplicity and abundance, hydrogen doesn't ... Continue reading

Fuel cell.