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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.

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

Exploding Fertilizer

Atmospheric nitrogen is a diatomic molecule of just two nitrogen atoms bonded very strongly to each other. Nitrogen, in compound with other elements, is just a single nitrogen atom bonded very weakly, ... Continue reading

Crops benefit from nitrogen-based fertilizers as in this field of safflower, Carthamus tinctorius L.

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.

More Chemistry Facts

Atmospheric Chemistry:

  1. Knocking the NOx Out of Coal
  2. Ozone: Good Up High, Bad Nearby
  3. SO2: What is it? Where does it come from?

Chemical Composition:

  1. Liquid Glass Is All Wet

Chemical Properties:

  1. Carbon Dating
  2. Oil Viscosity
  3. The Melting Point
  4. What Is A Mole?
  5. What is Oxidation?
  6. What Is pH?

Chemical Reactions:

  1. Catalysts
  2. Chemical Burning
  3. Exploding Fertilizer
  4. Fire Retardant Gels
  5. How Sublime
  6. It's Crying Time Again
  7. Luminol; Trick-or-Treat or Terrible Feat
  8. Spontaneous Combustion
  9. Warmer Hands (And Toes) Through Chemistry
  10. What Are Aerosols?
  11. What Give Batteries Their Charge?
  12. What Is Reduction?
  13. What Makes a Candle Burn?
  14. When Chlorine Met Sodium...
  15. Why Does Cement Set?
  16. Why Doesn't Glue Get Hard In The Plastic Bottle?

Elements and Compounds:

  1. Hydrogen - The Simplest Element
  2. Hydrogen Reaction Experiment Reaps a Surprise
  3. Ice That Burns
  4. Nitrogen Gas and Compounds
  5. Radioactive Radon
  6. Radon, A Rare Element
  7. Table Salt - It's All In The Ions
  8. Turning Oil Into Gas
  9. Uses Of Hydrocarbons
  10. What Are Isotopes?
  11. What Is A Half-life?
  12. What Is Acetone?
  13. What Is Arsenic?
  14. What Is The Periodic Table?

Food:

  1. Was Popeye Wrong?
  2. Why does popcorn pop?
  3. Your Nose Knows!

Medicine:

  1. Take Two And Call Me In The Morning

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