1. What is the mole?
Not this kind of mole!

2. Moles (abbreviated mol)
Derived from German word molekül (molecule)
SI measurement of an amount
1 mole = 6.02 x of representative particles, or…..
# of carbon atoms in exactly 12 g of Carbon-12 isotope
Called Avogadro’s number

3. What are Representative Particles? (Table 10.1 p. 290)
The smallest pieces of a substance:
molecular cmpd – molecule (H2O, C12H22O11)
ionic cmpd - formula unit (made of ions)
Sodium chloride = NaCl
element: is the
Remember the 7 diatomic elements? (made of molecules) BrINClHOF
atom
Br2 I2 N2
Cl2 H2 O2 F2

4. Practice problem
Magnesium is a light metal used in the manufacture of aircraft, automobile wheels and tools. How many moles of magnesium is x 1023 atoms of magnesium?

5. Guided Practice Problem #3, #4 p. 291

6. Mole Video 3:49

7. Quick Quiz 1 trillion bucks $1,000,000,000,000 80 billion times
6.02 x 1023
How big is a mole?
If everyone in the world got a mole of pennies, how much $ would every person have?
If you stacked a mole of paper how many times would it go from the Earth to the moon?
How long would it take for every person in the world to eat through a mole of marshmellows?
1 trillion bucks
$1,000,000,000,000
80 billion times
80,000,000,000
40,000,000 years w/o a bathroom break!