AMDEC SCH 3U Unit #2 Test (Modules 5-8)
Aids Permitted: ALCHEM Periodic Table of Elements and Ions, calculator
Part A: Knowledge and Understanding [30 marks]
Multiple Choice [18]
Put a capital letter in the space beside each multiple choice question that best answers it.
1.
____ The statement “Ms. Gerber is 5’6” tall” is an example of a
a) qualitative property
b) quantitative property
c) chemical property
d) any of these
2.
____ “Coconut oil is a solid that melts in your hand” is an example of a
a) chemical change
b) physical change
c) chemical property
d) physical property
3.
____ Which of the following is not an example of a physical change?
a) a nail rusting
b) cutting a nail in half with a saw
c) a nail being hammered into a piece of wood
d) all of the above are physical changes
4.
____ Which of the following elements is not a diatomic molecule in its natural state?
a) hydrogen
b) nitrogen
c) fluorine
d) all of these are diatomic molecules
5.
____ A student sees a reaction going on at a lab bench that is producing a clear, colourless gas. The student
collects a small sample of the gas in a stoppered test tube and carefully puts a flaming splint into the tube. The
match makes a noticeably loud “pop” explosion-like sound. Which gas was being produced in the reaction?
a) oxygen
b) nitrogen
c) hydrogen
d) carbon dioxide
6.
____ A student finds the total mass of an Erlenmeyer flask sealed with a rubber stopper and its contents. Inside,
vinegar is contained in a small test tube and there is a small sample of baking soda at the bottom of the flask.
The student then mixes the baking soda and vinegar together by turning the erlenmeyer flask upside down then
right side up again. Carbon dioxide gas, aqueous sodium acetate, and water are produced inside the flask.
When the reaction has finished, what is true about the total mass of the erlenmeyer flask and its contents
compared to its total initial mass?
a) The final mass is more than the initial mass
b) The final mass is the same as the initial mass
c) The final mass is mass less than the initial mass
d) Any of these scenarios could occur
7.
____ Which of the following is not a characteristic of oxygen gas?
a) it is colourless
b) it is odourless
c) when bubbled through a limewater solution, it turns the solution milky white
d) these are all characteristics of oxygen gas
8.
____ Which of the following equations is properly balanced?
a) Ca(ClO3)2(s)  CaCl2(g) + O2(g)
b) Ca(ClO3)2(s)  CaCl2(g) + 3/2 O2(g)
c) Ca(ClO3)2(s)  CaCl2(g) + 3 O2(g)
d) 2 Ca(ClO3)2(s)  2 CaCl2(g) + 6 O2(g)
9.
____ Which type of chemical reaction always contains water as one of the products?
a) synthesis
b) combustion
c) decomposition
d) single displacement
10. ____ In which type of reaction would you most likely observe the formation of an ionic compound as a precipitate?
a) synthesis
b) decomposition
c) single displacement
d) double displacement
11. ____ Chemical ice packs that are found in first aid kits, when put into use for an injury, are an example of an
a) exothermic process
b) endothermic process
c) exogenic process
d) endoplasmic process
12. ____ The addition of concentrated acid to water in a beaker results in the beaker feeling warm to the touch. This
is an example of an
a) exothermic process
b) endothermic process
c) exogenic process
d) endoplasmic process
13. ____ Another name for a combustion reaction is a(n)
a) synthesis reaction
b) oxidation reaction
c) reduction reaction
d) double displacement reaction
14. ____ Metal oxide compounds always react with water to form
a) acids
b) bases
c) oxygen gas
d) hydrogen gas
15. ____ Stomach ache medicines, such as TUMS and Milk of Magnesia, contain an active ingredient that is a(n)
a) acid
b) base
c) hydrocarbon
d) none of these
16. ____ Acid-base neutralization reactions involving hydroxide-containing bases belong to which family of reactions?
a) synthesis
b) combustion
c) decomposition
d) double displacement
17. ____ What ion is present in all acids?
+
a) H
1b) OH
+
c) Na
1d) Cl
2-
18. ____ The products of an acid-base reaction, where the base contains carbonate ions (CO 3 ), are
a) water only
b) water and a salt
c) water and carbon dioxide
d) water, a salt, and carbon dioxide
Short Answer [12]
19. What is the difference in meaning between the “three 3’s” bolded and identified in this equation by
the arrows A, B, and C? [3]
Al(NO3)3(aq) + 3 NaOH(aq)  Al(OH)3(s) + 3 NaNO3(aq)
↑
↑
↑
A
B
C
20. Compare and contrast the terms “aqueous” and “liquid” as they pertain to an ionic compound. [3]
Aqueous
Liquid
Difference
Similarity
21. Describe in detail a key feature of each reaction family that makes it unique from the others. [6]
a) Synthesis
b) Decomposition
c) Single Replacement
d) Double Displacement
e) Complete Combustion
f)
Incomplete Combustion
Part B: Application Questions [30 marks]
1. a) Classify each reaction as one of the following types: synthesis, decomposition, complete
combustion, incomplete combustion, single displacement, double displacement, or other. [7]
O2 
i.
C4H10 +
ii.
FeSO4 + NaCO3
iii.
C7H5(NO2)3 
iv.
SnI4
v.
C2H5OH +
vi.
H2O +
vii.
Ca3(PO4)2 + SiO2 + C  CO +
+
CO2 +

C
Sn
O2 
SO3

CO +
C
_____________________________
FeCO3 + Na2SO4
+

Zn
H2O +
CO
+
+
N2
+
_____________________________
H2O
_____________________________
ZnI2
CO2 +
_____________________________
H2O
_____________________________
H2SO4
_____________________________
CaSiO3 +
P
_____________________________
2. Write a chemical equation, including states of matter, for each of the following reactions. They do
not have to be balanced. [7]
a) When fluorine gas is put into contact with calcium metal at high temperatures, calcium fluoride
powder is created.
b) Aqueous sodium chloride and iron are created when sodium metal reacts with aqueous iron (II)
chloride.
3. Balance each of the following equations using a method of your choice. [6]
a) ____ H3BO3 + ____ Ca(OH)2  ____ HOH + ____ Ca3(BO3)2
b) ____ C6H6 + ____O2  ____CO2 + ____H2O
c) ____ HClO4 + ____ P4O10  ____ H3PO4 + ____Cl2O7
4. Fill in the products of each reaction. You do not need to balance the equations. [6]
a) K + Fe(NO3)3 
b) C4H10 +
c) AlN 
O2 
d) HBr + LiOH 
e) Cu
+
f) K2O +
O2 
HOH 
5. Balance the following equation using the algebraic method. Show your thinking by including your
mathematical work. [4]
AsCl3 + NaBH4  AsH3 + NaCl + BCl3