STATION 1: The Mole
Units you already know…
A dozen is ______ objects.
A minute is ______ seconds.
New Unit:
Ex:
A pair of earrings is __________ earrings.
A decade is _______ years.
A mole is ________________________ atoms.
A mole of beans are ________________________ beans.
A mole of pencils are ________________________ pencils.
In addition…
You should remember that the mass of __________ mole of an element has the ________ value as
the ____________________ listed in the ____________________. So…
1 mole of any element = molar mass of that element in grams
(found on the periodic table)
1 mole of Carbon =
_____________
grams of Carbon
1 mole of Nitrogen =
_____________
grams of Nitrogen
1 mole of Hydrogen =
_____________
grams of Hydrogen
1 mole of Copper =
_____________
grams of Copper
Got it? Let’s practice and see
Solve the following problems, don’t forget to write down your units!
1) What is the mass of one mole of nitrogen? _______________________
2) What is the mass of five moles of nitrogen? _______________________
3) How many atoms are in one mole of nitrogen? _____________________
4) What is the mass of one mole of iron? ____________________
5) What is the mass of three moles of iron? ____________________
STATION 3: The Mass of a Mole
Instructions: Show your work for the following problems. Hint: Recall that molar mass is the mass of
a substance in 1 mole!
Part A.
Answers should be in grams.
1.
What is the mass of one mole of lithium?
__________________
2.
What is the mass of one mole of calcium?
__________________
3.
What is the mass of one mole of silver?
__________________
4.
What is the molar mass of one mole of fluorine, F2?
__________________
5.
What is the molar mass of one mole of KBr?
__________________
6.
What is the mass of 4 moles of lithium?
7.
What is the mass of 7 moles of strontium?
8.
What is the mass of 2 moles of KBr?
9.
What is the mass of 3 moles of NaCl?
STATION 4: Practical Application – Converting between Moles and Mass
1) If a bird eats 200 beans a week, how many weeks would it take for a person to eat a mole
of beans?
2) If the cafeteria serves 1,600 lunches a day, how many days would it take the cafeteria to serve a
mole of lunches?
3) If you have 2.00 moles of H2S, how many grams of H2S do you have? Hint: Start with
calculating the molar mass of H2S.
HONORS: Calculate the number of particles in each of the following quantities.
1) 3.00 mole H2
2) 4 mole O2
3) 1.50 mole KrF2
STATION 2: Molar Mass
1) What are the units for molar mass?
2) In your own words, list the steps you would take when calculating the molar mass of a compound.
3) What is the molar mass of Au?
4) What is the molar mass of P2O5?
6) What is the molar mass of AgNO3?
7) What is the molar mass of NaHCO3?
STATION 6: Types of Reactions and Types of Change!
Directions: Idenitify each of the following as a physical or chemical change. Put a P next to Physical Changes,
put a C next to Chemical Changes
1.
2.
3.
4.
5.
6.
7.
8.
Water evaporates into steam
Water is absorbed by a paper towel
Hydrochloric acid reacts with zinc
A piece of apple rots on the ground
A tire is inflated with air
A plant turns sunlight, CO2, and H2O into sugar and oxygen
Sugar dissovles in water
Milk turns sour
Directions: Identify what type of chemical reaction each of the following is – Synthesis (S), Decomposition
(D), Combustion (C), Single exchange (SE), Double exchange (DE)
____1.
2 KI + Cl2  2 KCl + I2
____2.
2 ZnS + O2  2 ZnO + 2 S
____3.
K2CO3 + CuSO4  CuCO3 + K2SO4
____4.
2 NaHCO3  Na2CO3 + H2O + CO2
____5.
H2O + SO3  H2SO4
____6.
2 H2 + O2  2 H2O
____7.
CaCO3  CaO + CO2
____8.
Li2O + H2O  2 LiOH
____9.
K2CO3 + 2 AgNO3  Ag2CO3 + 2 KNO3
____10.
H2SO4 + Zn  ZnSO4 + H2
STATION 5: Parts of a Reaction Equation, Law of Conservation of Mass, & Balancing Reactions
______1. (aq)
A. Solid
______2. (s)
B. gas
______3. (l)
C. aqueous/dissolved in water
______4. (g)
D. liquid
5. On what side of the  can reactants be found? Products?
Reactants =
Products =
6. Does the following equation follow the Law of Conservation of Mass? Explain why or why not.
NO + O2  NO2
Balance the following equations.
1. ____C3H8 + _____O2  ____H2O
2. ____Al
3. ____Al
+
____O2 
+
4. ____Pb(NO3)2
____HCl
+
+
_____CO2
____Al2O3

____AlCl3
____NaCl

+
____H2
____PbCl2
+
____NaNO3
HONORS:
Balance the following reaction equation.
____(NH4)3PO4 + ____ Pb(NO3)4  ____ Pb3(PO4)4 + ____ NH4NO3