1. What is a dozen? A dozen is a quantity (number of items)
1 dozen = items
1 dozen pencils = pencils
1 dozen doughnuts = doughnuts
1 dozen automobiles = automobiles 12 12 12 12

2. Four score and 7 years ago, our forefathers founded a great nation..
Other Quantity Terms
1 dozen items, = items
1 pair of items = items
1 googol of items = items
1 gross of items, = items
1 score of items = items 12 2
1.00 x 10100
144 20
Four score and 7 years ago, our forefathers founded a great nation..

3. Introduction to the Mole
The mole simply describes a quantity of items, just like the words dozen, googol, pair, score, and gross.

4. Chemists’ Quantity: The Mole
The Chemists’ Dozen
Instead of 12, one of mole of something means that you have:
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6.02 X 1023
Avogadro’s Number

5. What is a mole? A mole is a quantity (number of items)
1 mole of items = items
1 mole of pencils = pencils
1 mole of doughnuts = doughnuts
1 mole of cars = cars
6.02 x 1023
6.02 x 1023
6.02 x 1023
6.02 x 1023

6. Why is a mole that number?
We use moles to count _____ & ______
We need a really big number to have an amount of atoms that we can see & measure
1 moleCu = ______ atomsCu = _______ g
6.02 x 1023 is how many atoms you need so that the mass in grams = atomic mass
1 mole of lead atoms = ________ grams
atoms
molecules
6.02 x 1023
63.546
207.2

7. 1 mole 1 mole = = 1 mole The Mole = Wheel Volume of Gas Representative
atomic
1 mole
mass
Mass
22.4 L
Representative
Particles
Volume of Gas
at STP
6.02x10 23
Mole
Volume of Gas
at STP
1 mole
1 mole
Mole = =
22.4 Liters
# of Items
(Atoms / Molecules)
6.02 X 1023
1 mole
The Mole
Wheel =
atomic
mass
Mass

8. 1 mole 1 mole = = 1 mole The Mole Wheel = # of Items Volume of Gas
at STP
atomic
1 mole
mass
Mass
22.4 L
Representative
Particles
Volume of Gas
at STP
6.02x10 23
Mole
# of Items
(Atoms / Molecules)
1 mole
1 mole
Mole = =
22.4 Liters
6.02 X 1023
1 mole
The Mole
Wheel =
atomic
mass
Mass

9. Introduction to the Mole
The mole represents 6.02 x 1023 particles.
Avogadro’s number
- Standard form
- 1 mole of shoes = ?
- 1 mole of hamburgers = ?
- 1 mole of beaker tongs = ?

10. Introduction to the Mole
One mole of paper would make a stack that would reach to the moon more than 80 billion times.
One mole of pennies would reach to the sun and back 25,227,297,297,297,295 times
One mole of watermelon seeds would be found inside a melon slightly larger than the moon.
Enough soft drink cans to cover the surface of the earth to a depth of over 200 miles.
If you had Avogadro's number of unpopped popcorn kernels, and spread them across the United States of America, the country would be covered in popcorn to a depth of over 9 miles.

11. Introduction to the Mole
Molar Mass: The mass of a mole of a substance. Unit will be grams (g)
1 mole of Carbon (C) = 12.01g
1 mole of Copper (Cu) = 63.55g
Atomic Mass: The mass of one atom of a substance. Unit will be amu
One atom of Carbon (C) = amu
One atom of Copper (Cu) = amu

12. Introduction to the mole
To find the molar mass of a compound:
- Multiply the number of atoms for each element by the individual molar mass.
- Add the masses of all elements together.

13. Find the molar mass of the compound NaOH
Formula: ______________
Element Number of atoms Molar mass Total mass
of element
_________ __________ x ___________ = _____________
Total Molar Mass of ______________ equals _____________
g/mol Na 1
g/mol H 1
g/mol
g/mol O 1
g/mol
g/mol
NaOH
g/mol
equals g/mol

14. Converting between moles, atoms, particles, and molecules.
To convert between moles, atoms, particles, liters, and molecules, simply use the factor label method.
We can use a graphic organizer to help us convert between different amounts of a substance