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WorksheetsTest Review Chemical Reactions and Solubility
Total questions: 61
Worksheet time: 2hrs 44mins
Name
Class
Date
1.
At approximately what temperature does the solubility of sodium chloride, NaCl, match the solubility of potassium dichromate, K2Cr2O7?
a)
60 ºC
b)
30 ºC
c)
50 ºC
d)
83 ºC
2.
Which substance is MOST soluble at 0 ºC?
a)
KI
b)
NaNO3
c)
NaCl
d)
Ce2(SO4)3
3.
When 20 grams of potassium chlorate, KClO3, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:
a)
supersaturated
b)
saturated
c)
unsaturated
4.
When 50 grams of KCl is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:
a)
supersaturated
b)
unsaturated
c)
saturated
5.
What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?
a)
0.018 M
b)
0.0011 M
c)
1.052 M
d)
0.062 M
6.
What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO3 to a volume of 250 mL?
a)
15.9 M
b)
0.636 M
c)
0.642 M
d)
1.59 M
7.
What is a substance that is dissolved in another substance?
a)
solution
b)
solute
c)
solvent
d)
compound
8.
What type of solution will conduct electricity
a)
Ionic compound
b)
Molecular compound
c)
Sugar solution
d)
Saturated solution
9.
What is it about the water molecule that makes it a great solvent?
a)
water demonstrates polarity; a partial charge on each side of the molecule
b)
due to its molecular formula
c)
it has a liner molecular shape
d)
due to it's non-polar molecular structure
10.
KBr
a)
Soluble
b)
Insoluble
11.
Zinc Hydroxide
a)
Soluble
b)
Insoluble
12.
Silver acetate
a)
Soluble
b)
Insoluble
13.
Silver Iodide
a)
Soluble
b)
Insoluble
14.
Which is the correct net ionic equation for the reaction of AgNO3 and CaCl2?
a)
Ca2+(aq) + 2Cl- (aq) → CaCl(s)
b)
Ag+(aq) + Cl- (aq) → AgCl(s)
c)
Ag + Cl → AgCl
d)
Ag+ + Ca2+ →Ag2Ca (s)
15.
Which of the following does NOT form a precipitate?
a)
Pb(NO3)2(aq) + 2KI(aq) →
b)
Sr(NO3)2 (aq) + K2SO4(aq) →
c)
AgNO3(aq) + Na2S(aq) →
d)
Pb(NO3)2(aq) + AgNO3(aq) →
16.
What are the spectator ions in the reaction of sodium chloride with silver nitrate?
a)
silver and nitrate
b)
sodium and chloride
c)
sodium and nitrate
d)
silver and chloride
17.
Pick the formula equation.
a)
AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
b)
Ag+(aq)+ NO3-(aq)+ Na+(aq)+ Cl-(aq) → AgCl(s)+ Na+(aq)+ NO3-(aq)
c)
Ag+(aq)+ Cl-(aq) → AgCl(s)
18.
Is the following equation a formula, complete, or net ionic equation?
2H+(aq) + SO4 2- (aq) + CaCO3(s) → H2O(l) + CO2(g) + CaSO4(s
a)
Formula Equation
b)
Complete Ionic Equation
c)
Net Ionic Equation
19.
NaC2H3O2
a)
soluble
b)
insoluble
20.
Balance this equation-
__P4 + __O2 --> __P2O3
__P4 + __O2 --> __P2O3
a)
it is already balanced
b)
2, 1, 3
c)
1, 2, 3
d)
1, 3, 2
21.
Balance this equation.
_CH4 + _O2 --> _CO2 + _H2O
_CH4 + _O2 --> _CO2 + _H2O
a)
1,2,1,1
b)
2,1,2,1
c)
1,2,1,2
d)
0,2,0,2
22.
Balance this equation
_N2 + _H2 --> _NH3
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
23.
Which of the following metals is the most reactive according to the reactivity series of metals.
a)
Copper
b)
Zinc
c)
Magnesium
d)
Lithium
24.
What type of reaction is shown below?
2KClO3 --> 2KCl + 3 O2
2KClO3 --> 2KCl + 3 O2
a)
Synthesis
b)
Decomposition
c)
Combustion
d)
Single Replacement
25.
The formula shows that
X + ZY --> ZX + Y
X + ZY --> ZX + Y
a)
X and Y bonded into a more complex molecule.
b)
ZY has decomposed into two smaller compounds
c)
X is a more reactive than Y.
d)
Y has changed into a new compound.
26.
Complete the following equation:
2Cu (s) + O2 (g) -->
a)
2CuO (s)
b)
2CuO (g)
c)
4CuO (s)
d)
4CuO (g)
27.
Which one of the following metals could produce zinc metal, if heated with zinc oxide?
a)
Copper
b)
Aluminium
c)
Iron
d)
Silver
28.
What will be reaction if less reactive metal is added in a solution with more reactive metal compound?
a)
vigorous reaction
b)
fizzing gas produced
c)
burns moderately
d)
no reaction
29.
In an exothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released
30.
What type of reaction occurs in a hand warmer
a)
exothermic
b)
endothermic
31.
When you freeze water, it turns to ice. What kind of change is this?
a)
Physical
b)
Chemical
32.
After you mix two substances together, a new substance forms. This is an example of:
a)
Physical Change
b)
Chemical Change
33.
Evaporation is what kind of change?
a)
Endothermic
b)
Exothermic
34.
If the energy required to break chemical bonds is less than the energy given out by making new bonds the reaction is
a)
Exothermic
b)
Endothermic
c)
Neutralisation
35.
What is true of this reaction?
a)
Equal amounts of energy were released and absorbed
b)
The reaction released more energy than it absorbed
c)
The reaction absorbed more energy than it released
36.
What is true of the reaction described below?
Br2 + Cl2 + 30.0 J of energy → 2BrCl
Br2 + Cl2 + 30.0 J of energy → 2BrCl
a)
It is exothermic because energy was released.
b)
It is endothermic because energy is absorbed.
c)
It is exothermic because energy is absorbed.
d)
It is endothermic because energy is released.
37.
Sydnee mixes a solution of baking soda and water. The initial temperature of the solution is 22⁰C. She adds 10mL of vinegar and takes the temperature again. The final temperature is 17⁰C. Which of the following is true?
a)
The reaction is exothermic
b)
The reaction is endothermic
c)
ΔH is negative
d)
The reaction lost heat to the environment.
38.
What is the potential energy of the reactants? The energy readings are top 103, middle 45 and bottom 10
a)
10 kJ
b)
45 kJ
c)
103 kJ
d)
58 kJ
39.
What is the ΔH of the reaction? The energy readings are top 103, middle 45 and bottom 10
a)
35 kJ
b)
- 35 kJ
c)
- 58 kJ
d)
58 kJ
40.
What kind of reaction is this? The energy readings are top 103, middle 45 and bottom 10
a)
Endothermic
b)
Exothermic
c)
Cannot be determined
41.
Which letter corresponds to the activation energy of the forward reaction?
a)
A
b)
B
c)
C
d)
D
42.
The red line in the image shows what factor that affects the rate of reaction? (Click on image to hide text)
a)
Catalyst
b)
Surface Area
c)
Amount of Substance
43.
Based on its phase diagram, which is the most dense state for CO2?
a)
gas
b)
liquid
c)
solid
d)
supercritical fluid
44.
What state of matter is Y?
a)
solid
b)
liquid
c)
gas
d)
supercritical fluid
45.
What change occurs from F to E?
a)
sublimation
b)
deposition
c)
melting
d)
condensation
46.
What change occurs from E to C?
a)
sublimation
b)
freezing
c)
melting
d)
boiling
47.
What is the normal melting point of this substance?
a)
150 °C
b)
100 °C
c)
-50 °C
d)
0 °C
48.
What is point A?
a)
triple point
b)
critical point
c)
equilibrium point
d)
normal melting point
49.
Below the temperature of point B, this substance can exist as a ____________.
a)
solid only
b)
liquid only
c)
gas only
d)
either a solid, liquid or gas
50.
Which statement is true for carbon dioxide at -60 °C?
a)
All three phases are possible.
b)
It can exist as a solid or a gas, depending on pressure.
c)
It is a solid.
d)
With enough pressure it can be melted.
51.
What precipitate forms when you mix lead (II) nitrate with sodium chloride?
a)
sodium nitrate
b)
lead (II) chloride
c)
sodium lead
d)
chloride nitrate
52.
What are the spectator ions in this reaction?
CuCl2(aq) + NaOH(aq) → Cu(OH)2(s) + NaCl(aq)
CuCl2(aq) + NaOH(aq) → Cu(OH)2(s) + NaCl(aq)
a)
Cu2+ and OH1-
b)
Na2+ and Cl2-
c)
Na1+ and Cl1-
d)
Na1+ and OH1-
53.
what is the correct ionic equation for the reaction between AgNO3(aq) and KClaq
a)
Ag+ + NO3- + K+ + Cl- → K+ + NO3- + AgCl(s)
b)
Ag- + NO3+ + K- + Cl+ → K- + NO3+ + AgCl(s)
c)
Ag+ + NO3- + K+ + Cl- → KNO3(s) + Ag++ Cl-
d)
No reaction
54.
An aqueous solution of ammonium phosphate is placed into an aqueous solution of Sodium sulphate. what would be the net ionic equation
a)
no net equation therefore no observable reaction
b)
NH4+ + SO42- → (NH4)2SO4
c)
Na+ + PO43- → (Na)2PO4
d)
Na+ + SO42- →(Na)2SO4
55.
Which type of reaction has only one reactant?
a)
synthesis
b)
Double replacement
c)
Chemical reaction
d)
decomposition
56.
3Mg + N2 --> Mg3N2
What type of reaction is this?
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Combustion
57.
Fe + H2SO4 --> Fe2(SO4)3 + H2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
58.
The reaction below is an example of?
AgNO3 + NaCl → AgCl + NaNO3
AgNO3 + NaCl → AgCl + NaNO3
a)
Single Replacement
b)
Double Replacement
c)
Decomposition
d)
Combustion
59.
When balancing equations, the rule is that you can only add, change, and remove ____________
a)
Coefficients
b)
Mass
c)
Subscripts
d)
Elements
60.
A chemical reaction in which a compound or element burns by reacting with oxygen is called a(n)
a)
combination reaction
b)
decomposition reaction
c)
combustion reaction
d)
carbonate decomposition reaction
61.
What type of reaction is C3H8 + 5O2 => 3CO2 + 4H2O?
a)
combination
b)
decomposition
c)
combustion
d)
both combination and decomposition
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