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| Happy Mole Day |
Celebrated annually on October 23 from 6:02 a.m. to 6:02
p.m., Mole Day commemorates Avogadro's Number (6.02 x 1023) which is a basic measuring unit in chemistry. Mole Day was
created as a way to foster interest in chemistry. Schools throughout the United
States and around the world celebrate Mole Day with various activities related
to chemistry and/or moles.
Mole Day originated in an article in The Science Teacher in
the early 1980s. Inspired by this article, Maurice Oehler, now a retired high
school chemistry teacher from Prairie du Chien, Wisconsin, founded the National
Mole Day Foundation (NMDF) on May 15, 1991.
For a given molecule, one mole is a mass (in grams) whose
number is equal to the atomic mass of the molecule. For example, the water
molecule has an atomic mass of 18, therefore one mole of water weighs 18 grams.
An atom of neon has an atomic mass of 20, therefore one mole of neon weighs 20
grams. In general, one mole of any substance contains Avogadro's Number of
molecules or atoms of that substance. This relationship was first discovered by
Amadeo Avogadro (1776-1858) and he received credit for this after his death.
Mole Day Pledge:
I pledge allegiance to the mole, to the International Union
of Pure and Applied Chemistry, and to the atomic mass for which it stands, one
number, most divisible, with atoms and molecules for all.
(Provided by Sylvia Cooper - Morgantown High School,
Morgantown, WV)
p/s: Happy Mole Day to all even though its already too late.. haha.. have fun..
Q: What did Avogadro teach his students in math class?
A: Moletiplication
Q: What was Avogadro's favorite Indian tribe?
A: The Molehawks
Sources: wikipedia.org, NMDF Inc.
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