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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.

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.

Was Popeye Wrong?

When you think of Popeye the Sailor what is the first thing that comes to your mind? It is probably spinach. Popeye used to get extraordinary strength as soon as he munched down a can of spinach. ... Continue reading

Spinach

What Makes a Candle Burn?

Have you ever wondered how a candle works? If you haven't, think about it for a while. Why does it take so long for the wick to burn down? Why does it need a wick at all? ... Continue reading

A chemical reaction on your birthday cake.