Chapter 8 Review
The formation of a gas is evidence of
1.
2.
3.
4.
A chemical change.
A physical change.
No change in energy
Both (1) and (2)
The formation of a gas is evidence of
1.
2.
3.
4.
A chemical change.
A physical change.
No change in energy
Both (1) and (2)
Which of the following may be
evidence of a chemical change?
1.
2.
3.
4.
Release of energy as heat
Production of sound
Reduction in temperature
All of the above
Which of the following may be
evidence of a chemical change?
1.
2.
3.
4.
Release of energy as heat
Production of sound
Reduction in temperature
All of the above
In the word equation, iron + copper (II)
sulfate  iron (II) sulfate + copper, a
product is
1.
2.
3.
4.
Iron (II) sulfate.
Copper.
Iron.
both (1) and (2)
In the word equation, iron + copper (II)
sulfate  iron (II) sulfate + copper, a
product is
1.
2.
3.
4.
Iron (II) sulfate.
Copper.
Iron.
both (1) and (2)
In the reaction described by the following equation water +
energy  hydrogen gas +oxygen gas, energy
1. Can be considered a
reactant .
2. Is absorbed.
3. Is released.
4. Both (a) and (b)
In the reaction described by the
following equation water + energy 
hydrogen gas +oxygen gas, energy
1. Can be considered a
reactant .
2. Is absorbed.
3. Is released.
4. Both (a) and (b)
In the unbalanced formula equation
carbon + hydrogen  methane, the
formula CH4 represents
1.
2.
3.
4.
One atom of methane.
Five atoms of methane.
One molecule of methane.
One gram of methane.
In the unbalanced formula equation
carbon + hydrogen  methane, the
formula CH4 represents
1.
2.
3.
4.
One atom of methane.
Five atoms of methane.
One molecule of methane.
One gram of methane.
From a complete and correctly written
chemical equation, you can obtain the
1. Chemical formulas of the reactants and
products.
2. Relative amounts of the reactants and
products
3. Physical state of the reactants and products.
4. All of the above.
From a complete and correctly written
chemical equation, you can obtain the
1. Chemical formulas of the reactants and
products.
2. Relative amounts of the reactants and
products
3. Physical state of the reactants and products.
4. All of the above.
In a chemical equation, the formula of a substance
in a solid state is followed by the symbol
1.
2.
3.
4.
(l)
(s)
(g)
(aq)
In a chemical equation, the formula of
a substance in a solid state is followed
by the symbol
1.
2.
3.
4.
(l)
(s)
(g)
(aq)
The Greek letter delta ( ) above the
arrow in a chemical equation means
1.
2.
3.
4.
“yields” or “produces.”
a catalyst is used in the reaction.
the reaction releases energy as heat.
the reactants are heated.
The Greek letter delta ( ) above the
arrow in a chemical equation means
1.
2.
3.
4.
“yields” or “produces.”
a catalyst is used in the reaction.
the reaction releases energy as heat.
the reactants are heated.
For which element(s) are the number of
reactant atoms and products atoms equal,
KBr + Cl2  Br2 + KCl
1.
2.
3.
4.
K
Cl
Br
All of the above
For which element(s) are the number
of reactant atoms and products atoms
equal,
KBr + Cl2  Br2 + KCl
1.
2.
3.
4.
K
Cl
Br
All of the above
According to the law of conservation of
mass, the total mass of the reacting
substances is
1. Always more than the total mass of the
products.
2. Always less than the total mass of the
products.
3. Sometimes more and sometimes less than
the total mass of the products.
4. Always equal to the total mass of the
products.
According to the law of conservation
of mass, the total mass of the reacting
substances is
1. Always more than the total mass of the
products.
2. Always less than the total mass of the
products.
3. Sometimes more and sometimes less than
the total mass of the products.
4. Always equal to the total mass of the
products.
In the unbalanced formula equation, SrBr2 + (NH4)2CO3 
SrCO3 + NH4Br
which coefficient should be placed to the left of NH4Br?
1.
2.
3.
4.
1
2
3
4
In the unbalanced formula equation,
SrBr2 + (NH4)2CO3  SrCO3 + NH4Br
which coefficient should be placed to
the left of NH4Br?
1.
2.
3.
4.
1
2
3
4
Which coefficients would be used to
balance the following equation,
SrBr2 + (NH4)2CO3  SrCO3 + NH4Br?
1.
2.
3.
4.
1,2,1,1
1,1,2,1
1,1,1,2
1,1,1,1
Which coefficients would be used to
balance the following equation,
SrBr2 + (NH4)2CO3  SrCO3 + NH4Br?
1.
2.
3.
4.
1,2,1,1
1,1,2,1
1,1,1,2
1,1,1,1
A synthesis reaction is the only type of
chemical reaction that
1. Has only one reactant.
2. Can involve the oxidation of organic
compounds.
3. Results in the formation of a single
product.
4. Both (1) and (3).
A synthesis reaction is the only type of
chemical reaction that
1. Has only one reactant.
2. Can involve the oxidation of organic
compounds.
3. Results in the formation of a single
product.
4. Both (1) and (3).
Which of the following equations
represents a decomposition reaction?
1. 2Sb (s) + 3 I2(g)  2SbI3 (s)
2. 2HgO (s)  2Hg (l) + O2 (g)
3. FeS (s) + 2 HCl (aq)  H2S (g) + FeCl2 (aq)
4. Zn (s) + H2SO4 (aq)  ZnSO4 (aq) + H2 (g)
Which of the following equations
represents a decomposition reaction?
1. 2Sb (s) + 3 I2(g)  2SbI3 (s)
2. 2HgO (s)  2Hg (l) + O2 (g)
3. FeS (s) + 2 HCl (aq)  H2S (g) + FeCl2 (aq)
4. Zn (s) + H2SO4 (aq)  ZnSO4 (aq) + H2 (g)
If a metal is placed in an ionic solution
containing another metal and no reaction
occurs, then the metal originally in the solution
is
1.
2.
3.
4.
A halogen.
Higher on the activity series.
Not on the activity series.
A catalyst.
If a metal is placed in an ionic solution
containing another metal and no
reaction occurs, then the metal
originally in the solution is
1.
2.
3.
4.
A halogen.
Higher on the activity series.
Not on the activity series.
A catalyst.
The reaction Pb(NO3)2 + 2KI  PBI2 + 2 KNO3 is a
1.
2.
3.
4.
Double – displacement reaction.
Synthesis reaction.
Decomposition reaction.
Combustion reaction.
The reaction Pb(NO3)2 + 2KI  PBI2 + 2 KNO3 is a
1.
2.
3.
4.
Double – displacement reaction.
Synthesis reaction.
Decomposition reaction.
Combustion reaction.
The reaction 2C2H2 + 5O2  4CO2 + 2 H2O is a
1.
2.
3.
4.
Combustion reaction.
Synthesis reaction.
Decomposition reaction.
Double-displacement reaction.
The reaction 2C2H2 + 5O2  4CO2 + 2 H2O is a
1.
2.
3.
4.
Combustion reaction.
Synthesis reaction.
Decomposition reaction.
Double-displacement reaction.
The reaction Mg + 2HCl  H2 + MgCl2 is a
1. Synthesis reaction.
2. Decomposition reaction.
3. Single –displacement reaction.
4. Double-displacement reaction.
The reaction Mg + 2HCl  H2 + MgCl2 is a
1. Synthesis reaction.
2. Decomposition reaction.
3. Single –displacement reaction.
4. Double-displacement reaction.
In the reaction
Zn (s) + H2SO4 (aq)  ZnSO4 (aq) + H2 (g), what element
has been displaced.
1.
2.
3.
4.
Zn
H
S
O
In the reaction
Zn (s) + H2SO4 (aq)  ZnSO4 (aq) + H2 (g), what
element has been displaced.
1.
2.
3.
4.
Zn
H
S
O
Based on solubility rules, which
compound is insoluble?
1.
2.
3.
4.
NaOH
Cu(NO3)2
Cu(OH)2
All of the above
Based on solubility rules, which
compound is insoluble?
1.
2.
3.
4.
NaOH
Cu(NO3)2
Cu(OH)2
All of the above
Which of the following ions are
spectator ions?
NaOH + Cu(NO3)2  Cu(OH)2 + NaNO3
1.
2.
3.
4.
Na+ and OHCu2+ and OHNa+ and NO3Cu2+ and NO3-
Which of the following ions are
spectator ions?
NaOH + Cu(NO3)2  Cu(OH)2 + NaNO3
1.
2.
3.
4.
Na+ and OHCu2+ and OHNa+ and NO3Cu2+ and NO3-
The net ionic equation for the reaction
below is,
NaOH + Cu(NO3)2  Cu(OH)2 + NaNO3
1. Na+ (aq) + NO3- (aq)  NaNO3 (s)
2. Cu2+ (aq) + 2OH-(aq)  Cu(OH)2(s)
3. Cu2+(aq) + 2OH-(aq)  NaNO3 (s)
4. Na+ (aq) + NO3- (aq)  Cu(OH)2(s)
The net ionic equation for the reaction
below is,
NaOH + Cu(NO3)2  Cu(OH)2 + NaNO3
1. Na+ (aq) + NO3- (aq)  NaNO3 (s)
2. Cu2+ (aq) + 2OH-(aq)  Cu(OH)2(s)
3. Cu2+(aq) + 2OH-(aq)  NaNO3 (s)
4. Na+ (aq) + NO3- (aq)  Cu(OH)2(s)