Chemistry Facts

What Is The Periodic Table?

The periodic table of the elements is a representation of all known elements in an orderly array. The periodic law presented by Dmitri Mendeleev in 1869 stated that if the (known) elements are ... Continue reading

Table Salt - It's All In The Ions

All elements are defined by their individual atoms, which are in turn identified by the number of protons in the nucleus of each atom. Since protons are carriers of positive electrical charge, there ... Continue reading

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

Knocking the NOx Out of Coal

Nitrogen is the most common part of the air we breathe. In fact, about 80% of the air is nitrogen. Normally, nitrogen atoms float around joined to each other like chemical couples. But when air is ... Continue reading

Air is mostly nitrogen molecules (green in the above diagram) and oxygen molecules (purple). When heated hot enough (around 3000 degrees F), the molecules break apart and oxygen atoms link with the nitrogen atoms to form NOx, an air pollutant.

More Chemistry Facts

Atmospheric Chemistry:

Chemical Composition:

Liquid Glass Is All Wet

Chemical Properties:

Chemical Reactions:

Elements and Compounds:

Food:

Medicine:

Take Two And Call Me In The Morning

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