Font size
WorksheetsChemical Reactions Mixed Practice
Total questions: 109
Worksheet time: 2hrs 27mins
What class of reaction is shown here?
4Si + S8 ⟶ 2Si2S4
Combustion
What class of reaction is shown here?
3Ca + 2AlCl3 ⟶ 3CaCl2 + 2Al
Single replacement
Combustion
Is this a redox reaction?
3KOH + H3PO4 ⟶ K3PO4 + 3H2O
No
Yes
Is this a redox reaction?
2Pb(NO3)2 ⟶ 2PbO + 4NO2 + O2
No
Yes
What class of reaction is shown here?
3KOH + H3PO4 ⟶ K3PO4 + 3H2O
Single replacement
Double
displacement
Combustion
What class of reaction is shown here?
2Pb(NO3)2 ⟶ 2PbO + 4NO2 + O2
Single
replacement
Double displacement
What class of reaction is shown here?
3Mg + N2 ⟶ Mg3N2
Single replacement
Double displacement
What class of reaction is shown here?
2NO2 ⟶ N2 + 2O2
Single
replacement
Double displacement
What class of reaction is shown here?
P4 + 3O2 ⟶ 2P2O3
Single
replacement
Double displacement
What class of reaction is shown here?
Fe + H2SO4 ⟶ Fe2(SO4)3 + H2
Double displacement
What type of reaction is shown here?
__ C5H10O4 + __O2 ⟶ __CO2 + __H2O
Double Displacement
Synthesis
Which set of coefficients correctly balances the equation below?
___C4H12 + ___O2 ⟶ ___CO2 + ___H2O
1, 7, 4, 6
1, 6, 4, 6
1, 1, 1, 1
1, 7, 4, 12
Identify the spectator ion(s) in this reaction. Refer to your solubility table.
MgCl2(aq) + 2 AgNO3(aq) ⟶ Mg(NO3)2(aq) + 2 AgCl(s)
Mg2+
Cl-
Ag+
NO3-
Is this a redox reaction?
NH3 + HCl ⟶ NH4Cl
No
Yes
Balance this equation: __Li + __Cl2 ⟶ __LiCl
2Li + Cl2 ⟶ 4LiCl2
2Li + Cl2 ⟶ LiCl2
2Li + Cl2 ⟶ 2LiCl
2Li + Cl2 ⟶ Li2Cl2
What class of reaction is shown here?
___C4H12 + ___O2 ⟶ ___CO2 + ___H2O
Double Displacement
Decomposition
What class of reaction is shown here?
H2SO4 + Fe ⟶ H2 + FeSO4
Combustion
What class of reaction is shown here?
PbCl2 + AgNO3 ⟶ Pb(NO3)2 + AgCl
Double Displacement
Combustion
What class of reaction is shown here?
NH3 + HCl ⟶ NH4Cl
Double Displacement
Combustion
Which chemical reaction two ionic compounds switching the cations?
Synthesis
The reaction XY ⟶ X + Y is an example of _____.
synthesis
decomposition
single replacement
double replacement
The reaction XY ⟶ X + Y is an example of _____.
synthesis
decomposition
single replacement
double replacement
The reaction A + B ⟶ AB is classified as a _____ reaction.
synthesis
decomposition
single replacment
double replacement
The reaction AB + XY ⟶ XB + AY is an example of ______.
synthesis
decomposition
single replacement
double replacement
What class of reaction best describes the equation below?
2HI ⟶ H2 + I2
synthesis
decomposition
single replacement
double replacement
What class of reaction best describes the equation below?
Zn + H2S ⟶ ZnS + H2
synthesis
combustion
single replacement
double replacement
What class of reaction best describes the equation below?
CH4 + O2 ⟶ CO2 + H2O
(a)
What class of reaction best describes the equation below?
FeS + HCl ⟶ H2S + FeCl2
(a)
What class of reaction best describes the reaction
Mg + HCl ⟶ MgCl2 + H2
(a)
The chemical equation
Cl2 + 2 KBr ⟶ 2 KCl + Br2
is best described as a _______ reaction.
synthesis
decomposition
single replacement
double replacement
What class of reaction best describes the equation below?
MgCO3 ⟶ MgO + CO2
(a)
Which of the following chemical equations is an example of a combustion reaction?
2Al2O3 ⟶ 4Al + 3O2
2C5H10 + 15O2 ⟶ 10CO2 + 10H2O
2MgCl2 + Na2CO3 ⟶ 2 NaCl + MgCO3
K2O + H2O ⟶ 2 KOH
Which of the following chemical equations is an example of a double displacement reaction?
2Al2O3 ⟶ 4Al + 3O2
2C5H10 + 15O2 ⟶ 10CO2 + 10H2O
2MgCl2 + Na2CO3 ⟶ 2 NaCl + MgCO3
K2O + H2O ⟶ 2 KOH
Which of the following is an example of a decomposition reaction?
2NaF ⟶ 2 Na + F2
P2O5 + 3 H2O ⟶ 2H3PO4
2FeCl3 + 3Zn ⟶ 2Fe + 3ZnCl2
C6H12O6 + 6O2 ⟶ 6CO2 + 6 H2O
Which of the following is an example of a single replacement reaction?
2NaF ⟶ 2 Na + F2
P2O5 + 3 H2O ⟶ 2H3PO4
2FeCl3 + 3Zn ⟶ 2Fe + 3ZnCl2
C6H12O6 + 6O2 ⟶ 6CO2 + 6 H2O
Which of the following is an example of a synthesis reaction?
Cl2 + 2NaBr ⟶ 2NaCl + Br2
MgO + CO2 ⟶ MgCO3
FeBr3 + K3PO4 ⟶ FePO4 + 3KBr
2Na2O2 ⟶ 2Na2O + O2
The reaction AB + X ⟶ XB + A is classified as a _____ reaction.
synthesis
decomposition
single replacement
double replacement
combustion
Which set of coefficients correctly balances the following equation using lowest, whole number ratios?
___ H2 + ___ O2 → ___ H2O
1, 1, 3
2, 2, 2
1, 2, 1
2,1, 2
4, 2, 4
Fill in the blanks with the coefficient:s that correctly balance the equation:
PCl5 + _ H2O ⟶ _ HCl + H3PO4
4, 5
1, 6
3, 8
2,2
What set of coefficients balances the equation
using standard form (lowest whole number ratios)?
_Zn+_HCl ⟶ _ZnCl2 +_H2
2, 4, 2, 2
Balance this equation:
P4 + O2 ⟶ P2O3
3 P4+ O2 ⟶ 2 P2O3
P4+ O2 ⟶ 2 P2O3
P4+ 3 O2 ⟶ 2 P2O3
P4+ 2 O2 ⟶ 3 P2O3
Which of these equations represents a redox reaction?
Ca(HCO3)2 ⟶ CaCO3 + H2O + CO2
CH3COOH + NaOH ⟶ CH3COONa + H2O
Zn + 2FeCl3 ⟶ ZnCl2 + 2FeCl2
NaCl + AgNO3 ⟶ AgCl + NaNO3
Write a balanced reaction for this reaction
Zn(s) + H2S(aq) →
ZnS + H
ZnS + H2
ZnS2 + H
Zn2S + H2
Which set of products gives the correctly balanced equation for the reaction:
NaOH + Fe(NO3)3 →
NaFe + OH(NO3)3
2NaNO3 + 3Fe(OH)3
NaNO3 + FeOH
3NaNO3 + Fe(OH)3
What are the products for this combustion reaction:
C2H4 + 2 O2 →
C2O2 + H4
CO2 + HOH
CO + H
CO2 + H2O
Predict the products for the this reaction:
K + HCl →
KCl + H2
KHCl
KH + Cl2
KCl + H
Predict the products for the this reaction:
Mg + CuCl2 →
MgCl2 + Cu
MgCl + Cu
MgCu + Cl2
CuMg + Cl2
Predict the products for the this reaction:
Ag3N + KCl →
AgCl + K3N
AgK + ClN3
AgN3 + KCl
KAg + N3Cl
Predict the product of the following equation:
F2 + Ca →
FCa
F2Ca
CaF2
FCa
CaF
Mg + Al(OH)3 →
in a reaction, aqueous barium chloride reacts with aqueous potassium carbonate to produce solid barium carbonate and aqueous potassium chloride.
What is the correct balanced equation?
Ba2Cl(aq) + KCO3(aq) 3 ⟶ BaCO3(s) + KCl(aq)
BaCl2(aq) + K2CO3(aq) ⟶ BaCO3(s) + 2KCl(aq)
2MgCl2 + Na2CO3 ⟶ 2BaCO3(s) + K2Cl(aq)
Ba2Cl2(aq) + KCO3(aq) ⟶ CO3Ba2CO3(s) + KCl2(aq)
What kind of reaction is shown below?
2C3H7OH +9O2 -> 6CO2 + 8H2O
Double Displacement
Synthesis
What class of reaction is shown below?
CaCO3 + Ag2SO4 → CaSO4 + Ag2CO3
Double Displacement
Synthesis
A + BC--> AC + B
What class of reaction is shown below?
____ O2 + ____ C5H12O2 ⟶
Synthesis
What class of reaction is shown below?
____ PbSO4 + ____ AgNO3 ⟶
Double Displacement
Synthesis
What class of reaction is shown below? ____ HBr + ____ Fe ⟶
Synthesis
What class of reaction is shown below?
BF4 ⟶ B + 2 F2
(a)
What class of reaction is shown below?
Ca + 2AgNO3 ⟶
(a)
What class of reaction is shown below?
Mg(OH)2 ⟶
What class of reaction is shown below? Pb(NO3)2 + KOH =>
Double Displacement
Synthesis
Balance the equation: What is the coefficient on the sodium chloride?
__NaCl + __AgNO3 ⟶ __AgCl + __NaNO3
According to the activity series, which of the following single replacement reactions can occur?
Ca + Al2(SO4)3
Fe + NaOH
Ni + MgSO4
Al + KOH
Based on the activity series, which metal could X represent in the reaction below?
X + Ca (NO3)2 --> Ca + X(NO3)2
Ba
Na
Mg
Zn
What are the products of this reaction? (Refer to the activity series)
Zn(s) + H2SO4(aq) ⟶
Zn(SO4)2 + H
ZnSO4 + H2
ZnSO4 + H
Zn2SO4 + H2
No reaction
What are the products of this reaction?
C2H4 + O2 ⟶
C2O2 + H4
CO2 + H2 + O2
CO + H
CO2 + H2O
No reaction
Write the balanced equation for the complete combustion of octane (C8H18)
C8H18 + 8O2 ⟶ 8CO2 + 9H2O
C8H18 + 17O2 ⟶ 8CO2 + 9H2O
2C8H18 + 25O2 ⟶ 16CO2 + 18H2O
C8H18 + O2 ⟶ CO2 + H2O
The products of a combustion reaction involving hydrocarbons as a fuel will usually be
unknown
carbon dioxide and water
carbon monoxide and hydrogen gas
carbon and water
To determine whether a single replacement reaction will happen, one must consult
a lexicon
the activity series
a solubility chart
One Thousand Magical Herbs and Fungi by Phyllida Spore
Predict the product of the following synthesis reaction.
Ca + N2 ⟶
CaN2
CaN
Ca3N2
CaNNot
Predict the products, before balancing.
Co2(SO4)3 + NaOH ⟶
CoOH + NaSO4
CoNa + OH(SO4)3
Co2OH + Na(SO4)3
Co(OH)3 + Na2SO4
no reaction
Predict the products, before balancing.
NaNO3 + Li2SO4 ⟶
NaSO4 + Li2NO3
Na2SO4 + LiNO3
NaLi + NO3SO4
no reaction
Predict the products, before balancing.
HC2H3O2 + Ba(OH)2 ⟶
Ba(C2H3O2)2 + H2
HBa + OHC2H3O2
Ba(C2H3O2)2 + H2O
BaC2H3O2 + H(OH)2
BaC2H3O2 + H2O
Predict the products for the this reaction: K + HCl ⟶
KCl + H2
KH + Cl2
Barium bromide reacts with lithium phosphate to yield lithium bromide and barium phosphate. What substance forms the precipitate in this reaction? (Refer to your solubility table)
lithium phosphate
lithium bromide
barium bromide
barium phosphate
What coefficients would properly balance the equation below?
__C6H14 + __ O2 ⟶ __ CO2 + __ H2O
2, 20, 12, 14
1, 9, 6, 7
2, 19, 12, 14
1, 8, 6, 7
Predict the formulas of the product(s) for the following reaction. (No need to balance.)
Ca(OH)2 + HNO3 ⟶
Ca(NO3)2 + H2O
H2Ca + (OH)(NO3)
CaNO3 + H2O
CaH + NO3OH
What precipitate forms when you mix lead (II) nitrate with sodium chloride? (Refer to your solubility table)
Which is the correct net ionic equation for the reaction of AgNO3 and CaCl2? (Refer to your solubility table)
What is the correct net ionic equation for the reaction shown below?
3 FeC2H3O2(aq) + 2 Na3PO4(aq) → Fe3(PO4)2(s) + 6 NaC2H3O2(aq)
3 Fe3+ + 2 PO43- →
Fe3(PO4)2
3 C2H3O2- + 2Na+ →
6 NaC2H3O2
Fe3+ + PO43- →
Fe3(PO4)2
C2H3O2- + Na+ →
NaC2H3O2
Which of the following does NOT form a precipitate?
(Refer to your solubility table)
What are the spectator ions in the reaction of sodium chloride with silver nitrate?
(Start by writing a balanced equation, then refer to your solubility table)
In this equation, CuCl2 + NaOH → Cu(OH)2 + NaCl
Which product is insoluble?
(Refer to your solubility table)
Which of these results in the formation of a precipitate?
(Refer to your solubility table)
Which of these results in formation of a precipitate?
(Refer to your solubility table)
What are the spectator ions in this reaction?
3 FeC2H3O2(aq) + 2 Na3PO4(aq) → Fe3(PO4)2(s) + 6 NaC2H3O2(aq)
Fe3+
C2H3O2-
Na+
PO43-
Which is the correct net ionic equation for the reaction of AgNO3 and CaCl2?
(Refer to your solubility table)
Ca2+ + 2Cl- → CaCl(s)
Ag+ + Cl- → AgCl(s)
Ag+ + Ca2+ →Ag2Ca
CuCl2(aq) + NaOH(aq) → Cu(OH)2(s) + NaCl(aq)
What is the net ionic equation for the reaction between K3PO4 (aq) and CuSO4 (aq)?
(Refer to your solubility table)
2 K+(aq) + SO42-(aq) → K2SO4 (s)
K+(aq) + SO42-(aq) → KSO4 (s)
3Cu2+(aq) + 2 PO43-(aq) → Cu3(PO4)2 (s)
Cu2+(aq) + PO43-(aq) → CuPO4 (s)
What are the correct products (before balancing) for the following reaction?
HCl + Mg(OH)2 →
MgCl2 + H2O
Mg +H2O
MgCl2 + H2
MgCl2 + H2O + CO2
What is the correct net ionic equation for this reaction? Refer to your solubility table.
MgCl2(aq) + 2 AgNO3(aq) ⟶ Mg(NO3)2(aq) + 2 AgCl(s)
Ag+ + Cl- ⟶ AgCl
Mg2+ + 2 NO3- ⟶ Mg(NO3)2
Ag+ + NO3- ⟶ AgNO3
Ag+ + Cl2- ⟶ AgCl2
Is this a redox reaction?
4Si + S8 ⟶ 2Si2S4
Yes
No
Ni (s) + H2O (l) →
Br2 (l) + KI (aq) →
Au (s) + HCl (l) →
A mixture contains chromium metal, copper metal, and tin metal. This mixture is mixed with a solution of nickel(II) nitrate. Which metals, if any, will react?
Chromium, only
Copper, only
Tin, only
All 3 metals will react
Predict the product(s) of this reaction (don't worry about balancing):
Li + H2O →
Li2O + H2
LiO + H2
LiOH + H2
Li(OH)2
Predict the product(s) of this reaction (don't worry about balancing):
Mg + HCl →
MgHCl
MgCl2 + H2
MgCl2 + H
MgCl + H2
Predict the product(s) of this reaction (don't worry about balancing):
SrI2 +Br2→
Sr + I2Br2
SrBr + I2
SrBr2 + I2
Sr + IBr2
Which metal is more reactive than calcium? (Refer to the activity series)
magnesium
potassium
silver
aluminum
What will be the result of the following?
Br2 + NaF ⟶
(Refer to your activity series)
Br will replace Na
No reaction will occur
What will be the result of the following: Li + NaF ⟶
(Refer to your activity series)
What will be the result of : Zn + AuCl2 ⟶
(Refer to the activity series)
Which one of the following would result in a reaction?
iron with magnesium chloride
magnesium with iron chloride
iron with zinc sulfate
gold with silver nitrate
