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Chemistry Facts

What Is The Periodic Table?

The periodic table of the elements is a representation of all known elements in an orderly array. The periodic law presented by Dmitri Mendeleev in 1869 stated that if the (known) elements are ... Continue reading

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 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.

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.

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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