Mole concept The concept of The Mole is

Mole concept

The concept of The Mole is incredibly useful! l The bad news is that when you first start using it, you won't know what you're doing. l l The good news is that by following a few simple rules, you'll be able to do amazing calculations, win friends and influence people (and yes get full marks in a test!). l Which is next Monday the 26 th November, 2007 by the way

Suppose you were sent into the store to buy 36 eggs. When you picked them up you would get 3 boxes, each containing 12 eggs. l You just used a mathematical device, called DOZEN, to simplify the process. l

A dozen eggs A dozen cupcakes

Atoms are so small that we cant visual them l So Chemists chose to use the term MOLE to represent amounts of matter l Matter being the number of l q Atoms q Particles q molecules

So ! The mole is a representative of an AMOUNT of something. Just as you can have a dozen eggs you can also have a dozen chairs, a dozen people, a dozen stars. So the scientist of the world can have a mole of water, a mole of sodium chloride, a mole of gold.

Now I need to show you the number associated with the mole: l 602 000 000 gosh darn it that’s a huge number This number is called Avogradro number and is simplied as 6. 02 X 1023

Definition of the mole The mole is the amount of substance which contains 6. 02 X 1023 ( the Avogadro constant) particles of that substance