Physical Science 20 - Chemistry - Unit 1 Exam Review:
*It wouldn’t be a bad idea to make sure you have finished all of your practice
questions from the unit*
1)
Compare and contrast Complete & Incomplete combustion
2)
What is the general formula for an alkane? _________________
3)
What is the general formula for an alkene? _________________
4)
State the rules for naming acids:
5) Give the name for each of the following compounds. Indicate the type of compound.
Compound
1. Li2(CrO4)
Name
2. HNO
3. Cu2(SO4)
4. Cl2O7
5. C6Cl4
6. CaBr2
7. LiCl
8. N2O5
9. H3PO4
10. HI
6) Write the formulas for the following compounds:
Compound
1. carbonic acid
2. Dinitrogen tetrahydride
3. Dichlorine heptaoxide
4. Iron (III) oxide
5. Lead (IV) chromate
6. Magnesium phosphate
7. Aluminum hydroxide
8. Sodium chloride
Formula
type
7) Fill in the following chart:
C3H6
H H H
C==C--C--H
H
H
Ethane
Heptane
C4H10
Propane
8. Balance the following equations.
a) ___ HCl (aq) +___ Fe2O3 (s) ___ FeCl3 (aq) + ___ H2O (aq)
b) ___ Li (s) + ___ O2 (g)  ___ Li2O (s)
c) ___ Mg(CO3)(s)  ___ MgO (s) + ___ CO2 (g)
9. Identify what type of chemical reaction each equation is in Question #8.
a)
________________________________
b)
________________________________
c)
________________________________
10. Write the products for the following chemical reactions and state their type of reaction:
a) ___Ca + ___Br2  ________________________________________
b) ___Mg + ___N2  _________________________________________
c) ___HI 
____________________________________________
d) ___Al + ___Cu(SO4)  ______________________________________
e) ___F2 + ___KCl 
________________________________________
f) ___CdCl2 + ___H2S  _______________________________________
g) ___BaCl2 + ___H3(PO4)  ____________________________________
h) ___C12H22 + ___O2  ________________________________________
The Mole and Stoichiometry
1. Name the representative particles of the following substances:
a)
Aluminum _____________________
b)
Carbon monoxide ____________________
c)
Fluoride __________________
d)
Iron (II) hydroxide _______________
e)
Cu __________________
f)
LiOH _____________________
2. Calculate the Molar Mass of each of the following:
a)
H2
b)
SiO2
c)
(NH4)2SO4
3. Find the number of representative particles in each of these substances.
a)
6.00 mol Fe
b)
0.25 mol of NaI
c)
34.0 mol SO3
4. How many moles are in each of the following?
a)
4.81 x 1024 atoms of Li
b)
1.50 x 1023 molecules of NH3
5. Find the mass of each of these substances when given moles
a)
2.40 moles of Sodium Hydroxide
b)
0.780 mol of Ca(CN)2
6. How many moles is in each of the following:
a)
0.800 g of Ca
b)
79.3 g of Cl2
c)
937 g of Ca(CH3COO)2
7. Calculate the volume of each of these gases at STP.
a)
9.6 mol of He
b)
4.8 mol of N2
8. Calculate the following mixed mole problems
a)
Find the number of atoms in 4.5 L of nitrogen gas at STP.
b)
Find the number of molecules in 60.0 g of NO2 gas.
c)
Find the mass of 18.0 L of CH4 gas at STP.
Stoichiometry
Show all your work as you complete the following problems. Include each step, all units and circle your
final answer.
1.
How many moles of ammonia are produced when 0.60 mole of nitrogen reacts with hydrogen?
____ N2 + _____ H2  _____ NH3
2.
Lithium nitride reacts with water to form ammonia and aqueous lithium hydroxide. What mass of
water is needed to react with 69.7 g of Li3N?
____ Li3N + ____ H2O  ___ NH3 + ____
3.
LiOH
Carbon monoxide reacts with hydrogen gas to produce methanol.
CO + 2H2  CH3OH
(Equation is balanced)
a)
How many moles of CO are needed to react with 0.48 mol of hydrogen gas?
b)
How many grams of CH3OH are produced from the complete reaction of 3.5 moles of Hydrogen
gas?
c)
How many molecules of methanol (CH3OH) are produced with 4 L of CO?
d)
What volume of Hydrogen be needed if 30 g of methanol is to be produced?
Limiting Reagents
If you have 290.0 grams of butane and 1000.0 grams of oxygen, which reagent limits the amount of products
produced in a complete combustion reaction? What is the volume of CO2 that will be produced?
C4H10 + O2 ----->
CO2 + H2O
Concentration
1. What is the molarity of a solution made when you dilute 35 grams of sodium carbonate to a volume of
3,400 mL?
2. Calculate how many grams it would take to make 450 mL of a 0.25 M calcium chloride solution.