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Chemistry Facts

Radon, A Rare Element

To the best of our knowledge, the entire universe is constructed from just over a hundred different types of building blocks called atoms. Each has its own characteristic properties, and while there ... Continue reading

How Sublime

Show of hands. How many of you can't resist playing with dry ice? Dry ice is carbon dioxide frozen to -109.3 degrees F (-78.5 C). Throw a piece in water and it bubbles and boils. Expose a piece to air ... Continue reading

Sublimation of Comet's Tail

Radioactive Radon

Radon is a gas produced by the radioactive decay of the element radium. Radioactive decay is a natural, spontaneous process in which an atom of one element decays or breaks down to form another ... Continue reading

Radon gas, a radioactive product of uranium, can reach high levels in some houses, depending on the local geology and house construction.

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