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Chemistry Facts

Liquid Glass Is All Wet

As a liquid changes to a solid, its molecules go from a state of turmoil and chaos to a state of order. As these molecules slow down to form a solid, they arrange themselves into a crystalline ... Continue reading

Old Window Pane

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

What Is A Mole?

No, it's not the furry little burrowing rodent with the star-shaped nose, from 'Wind In The Willows'... In chemistry, a mole is strictly defined as the number of particles of a pure material equal to ... Continue reading

Ozone: Good Up High, Bad Nearby

Ozone is a gas that forms in the atmosphere when 3 atoms of oxygen are combined (03). It is not emitted directly into the air, but at ground level is created by a chemical reaction between oxides of ... Continue reading

The largest ozone hole ever recorded, roughly three times the size of the U.S., was detected September 6, 2000 by NASA's Total Ozone Mapping Spectrometer.