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Chemistry Facts

What Is A Half-life?

When isotopes break down, or decay, they usually split apart into two smaller atoms. Excess neutrons and protons are often sent flying off through space, taking the excess energy of the atoms with ... Continue reading

Natural uranium contains 99% U238 and only about 0.7% U 235 by weight.

Uses Of Hydrocarbons

The hydrocarbons are the most broadly used organic compounds known, and are quite literally the driving force of western civilization. The greatest amounts of hydrocarbons are used as fuel for ... Continue reading

Why Does Cement Set?

Concrete has been known for literally thousands of years. It is a testament to the enduring strength of this material that concrete structures from those long-ago times are still standing strong ... Continue reading

Image of microstucture predicted from a NIST-developed model of cement hydration.

Fire Retardant Gels

Ultra-absorbent diapers, the kind that will hold massive amounts of liquids, have been used for years, without a second thought given to the materials within them. Let's face it; those materials ... Continue reading