1. The Mole & Avogadro’s Number Notes
CP Chemistry

2. Counting Units 1 dozen = 12 (eggs, donuts) 1 ream = 500 (paper)
1 pair = 2 (shoes)

3. Counting Atoms (Molecules)
Atoms and molecules are so tiny that chemists use the mole to count them
One Mole contains 6.02 x 1023 atoms
602,000,000,000,000,000,000,000
6.02 x 1023 = Avogadro’s number

4. How big is a mole?
One mole of popcorn would cover every dry surface of the Earth to a depth of six miles
One mole of stacked pennies would reach to the moon and back 16 times
One mole of marshmallows would cover the U.S. to a depth of 650 miles

5. Moles  Particles Conversions
Atoms, molecules
x 6.02 x 1023
÷ 6.02 x 1023
Moles

6. Example Conversions 3.5 moles to atoms 18.06 x 1023 atoms to moles
2.7 moles to particles
4.32 x 1024 atoms to moles