Moreholidays October National Mole Day


National Mole Day

National Mole Day

About National Mole Day

When is National Mole Day? This holiday is always observed on October 23

Does this holiday have something to do about moles in your lawn? Nope. Chemistry majors, teachers, and chemistry buffs, this special day is for you. It is National Mole Day, an October 23 holiday. By the end of this day, you will be an ace chemistry student, and understand Avogadro’s Number.

National Mole Day commemorates Avogadro’s Number (6.02 x 10^23). To thoroughly enjoy National Mole Day, one must first understand what a “Mole” in Chemistry is. A “mole” is a basic measuring unit. It equals the atomic mass of a single molecule. It is measured in grams. This measure was discovered by Italian Amadeo Avogadro.

Chemistry teachers celebrate this day, by getting kids more interested in chemistry. They create special lessons and lab experiments around the theme of chemical measurements.

Why celebrate from 6:02 a.m. to 6:02 p.m? Look at the chemical formula for a mole. It starts with the number 6.02.

Do you wonder why this day is not called “Avogadro’s Day”? While he was well known in the chemistry world, his fame did not extend far beyond this science.

How to Celebrate National Mole Day

Now that you know what this day is all about, we suggest you:

  • Break out the Chemistry Lab kit you got for Christmas or your birthday as a kid. Then, work out a chemistry experiment and measure the result in “Moles”.
  • If you are a chemistry teacher, prepare a laboratory experiment where the students will measure the results in moles.

Today's Quote

“Chemistry can be a good and bad thing. It is good when you make love with it. Chemistry is bad when you make crack with it.” – – Adam Sandler

Mole Day

History and Origin of National Mole Day

National Mole Day was first conceived in an article in The Science Teacher in the early 1980s. The date was selected as 10^23 is part of Avogadro’s number..

We did not find any documentation confirming this to be a “National” day. We found no congressional records or presidential proclamation.

Definition of “National” Days

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