2 Define the following: 144 Pair = Dozen = Gross = Ream = Mole = 2 12 5006.02 x 1023
3 A. What is the Mole? A large amount!!!! VERY A counting number (like a dozen)1 mol = 6.02 1023 particles“particles” may be atoms, molecules, formula units, or ionsThe number 6.02 x 1023 ( ) is called Avogadro’s numberA large amount!!!!VERY
4 A. What is the Mole? HOW LARGE IS IT??? 1 mole of hockey pucks would equal the mass of the moon!1 mole of basketballs would fill a bag the size of the earth!1 mole of pennies would cover the Earth 1/4 mile deep!
5 Ionic Compounds = Molecular Compounds = Now that we know… 1 mol = 6.02 x 1023 particlesWe must be able to recognize what type of particles we’re dealing with based on the substanceThink backElements (by themselves) =Ionic Compounds =Molecular Compounds =atomsFormula unitsmolecules
6 The representative particle in a mole of water is the water molecule. 1 mol H2O = x 1023 molecules H2O
7 The representative particle in a mole of copper is the copper atom. 1 mol Cu = x 1023 atoms Cu
8 The representative particle in a mole of sodium chloride is the formula unit. 1 mol NaCl = 6.02 x 1023 formula units NaClThe term “formula unit” is used to represent one “unit” of an ionic compound.
9 B. Molar Mass Mass of 1 mole of an element or compound. Atomic mass tells the...atomic mass units per atom (amu)grams per mole (g/mol)
10 B. Molar Mass Examples 12.011 g/mol 26.982 g/mol 65.38 g/mol carbon aluminumzincg/molg/mol65.38 g/mol