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Chemistry Facts

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.

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.

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.

Ice That Burns

What looks like regular water ice but hisses and jumps around like water on a hot plate when you put it on a room-temperature surface and bursts into flame when you light it up? It is a rare and ... Continue reading

Ice on fire: methane hydrate.