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Chemistry Facts

What Are Aerosols?

Aerosols are tiny particles suspended in the air. Most occur naturally, originating from volcanoes, dust storms, forest and grassland fires, living vegetation, and sea spray (Figure 1). Human ... Continue reading

Multiple fires are burning across the sourthern part of the African continent in September 2000, as shown by data from the Advanced Very High Resolution Radiometer (AVHRR) on board the NOAA 14 satellite.

It's Crying Time Again

If you've ever spent any time in the kitchen, you know that slicing, chopping or dicing raw onions makes you cry. This vegetable has been doing this to humans for a long time. The onion is believed to ... Continue reading

Onions

What Is pH?

Anyone who is the least bit familiar with vinegar, nausea, sodium bicarbonate, and ammonia-based cleaning solutions probably has a very good 'feel' for the different natures of acidic and basic ... Continue reading

Litmus paper is used to measure pH.

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.