National Mole Day | October 23
Mon Oct 23rd

National Mole Day

Any dreams of a burrowing creature celebration will be shattered; National Mole Day honors a unique number in chemistry; On October 23rd, chemists and chemistry students mark the occasion each year.


The celebrations, more specifically, take place between 6:02 AM and 6:02 p.m. on June 2, 2002 AM. The time and date are written in the United States, 6:02 10/23. The time and date are calculated from Avogadro's number. The number of Avagadro's number is 6.021023. Hence, one of the seven base SI units, defining the number of particles (atoms or molecules) in a single mole of a substance.

  • A mole is a unit of measurement used in chemistry to specify quantities of a chemical substance
  • Avogadro's number is a historical figure closely related to the Avogadro constant
  • Amedeo Avogadro, an early 19th-century Italian scientist, was named after the Avogadro constant

How to celebrate national mole day is a mystery

This scientific day can be celebrated in a variety of ways. Do you know how to use the mole in an equation?

  • Learn more about molecular science and Avogadro's number
  • Using moles, you can investigate the international system of measurement
  • Test your chemistry knowledge by testing your hands. Celebrate with other chemists and chemistry students
  • Conducting a mole experiment. See how many punds you can tell while doing it
  • Make a video with your students demonstrating what a mole is in your classroom
  • Make a rap about the mole. Be sure to include a little bit about Amedeo Avogadro's past
  • Investigate other chemists of his time while reading up on Italian scientist Amedeo Avogadro
  • Wear a t-shirt with a 6.021023 on it

Use #NationalMoleDay to post on social media to share your news.

National mole day history has a long tradition

National Mole Day was triggered by an article in The Science Teacher in the early 1980s. The National Mole Day Foundation was established on May 15, 1991 by a chemistry teacher at Prairie du Chien Senior High School who was inspired by the article and established the National Mole Day Foundation.

Mole FAQ

Q. How many zeros are in a mole? In a mole, there are 22 zeros. It is written in standard form as follows: It is written as follows: It is written as follows: 602,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000.

Q. How many moles are in a zero?

A. We don't know how many moles are in a zero.

What are the commas separated by commas in a large number of people called?

A. Each segment of a number between commas (which denotes place value) is designated periods.