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Double Displacement Reactions

Total questions: 70

Worksheet time: 1hrs 20mins

Name
Class
Date
1.

What will the balanced equation be if you react:

CaCl2 + NaOH

a)

CaCl2 + 2 NaOH --> Ca(OH)2 + 2 NaCl

b)

CaCl2 + 2 NaOH --> CaOH + 2 NaCl

c)

CaCl2 + 2 NaOH --> CaNa2 + 2 ClOH

d)

no reaction

2.

What is the precipitate formed between CaCl2 and NaOH?

a)

CaCl2

b)

NaOH

c)

Ca(OH)2

d)

NaCl

e)

no precipitate is formed

3.

Will the reaction between NaOH and KCl occur?

a)

Yes

b)

No

4.

Mark the indicators of a double displacement reaction.

a)

Water is formed

b)

gas is formed

c)

a precipitate is formed

d)

a phase change occurs

e)

none of these are correct

5.

Will the reaction between Cu(NO3)2 and K2SO4 happen?

a)

yes

b)

no

6.

Which equation is a double displacement reaction?

a)

Cl2 + 2KI --> 2KCl

b)

Fe + O2 --> Fe2O3

c)

CaCO3 --> CO2 + CaO

d)

CaCO3 + 2HCl --> CaCl2 + H2CO3

7.

What are the products for a reaction between KCl and AgNO3

a)

KAg + ClNO3

b)

KCl + AgNO3

c)

KNO3 + AgCl

d)

no reaction occurs

8.

Identify the single replacement reaction

a)

Cl2 + 2KI --> 2 KCl + I2

b)

Fe + O2 --> Fe2O3

c)

CaCO3 --> CaO + CO2

d)

2P + 5O2 --> P2O5

9.

Identify the decomposition reaction

a)

Cl2 + 2KI --> 2 KCl + I2

b)

Fe + O2 --> Fe2O3

c)

CaCO3 --> CaO + CO2

d)

2P + 5O2 --> P2O5

10.

Predict the products:

Mg(NO3)2 + CaCl2 →

a)

Mg(NO3)2 + CaCl2

b)

MgCa + Cl2(NO3)2

c)

Ca(NO3)2 + MgCl2

d)

CaNO3 + MgCl

11.
AB + CD →AD + CB
a)
Double Replacement
b)
Single Replacement
c)
Synthesis
d)
Decomposition
12.
2 AgNO3 + Cu --> Cu(NO3)2 + 2 Ag 
a)
single displacement
b)
double displacement
c)
decomposition
d)
synthesis
13.
A + BC →B + AC
a)
Single Replacement
b)
Decomposition
c)
Double Replacement
d)
Synthesis
14.

Based on the activity series, will this reaction occur?

Au (s) + HCl (aq) →

a)

Yes

b)

No

15.

Which metal is more reactive than calcium?

a)

magnesium

b)

potassium

c)

silver

d)

aluminum

16.
A displacement (single replacement) reaction will occur when...
a)
a more reactive metal displaces a less reactive metal from its compound.
b)
A less reactive metal displaces a more reactive metal from its compound
c)
Displacement only occurs when two of the same metals are reacted 
d)
Displacement reactions will only occur in metals above iron in the reactivity series
17.

Which among the following is(are) double displacement

reaction(s)?

(i) Pb + CuCl2 --> PbCl2 + Cu

(ii) Na2SO4 + BaCl2 --> BaSO4 + 2NaCl

(iii) C + O2 --> CO2

(iv) CH4 + 2O2 --> CO2 + 2H2O

a)

(a) (i) and (iv)

b)

(b) (ii) only

c)

(c) (i) and (ii)

d)

(d) (iii) and (iv)

18.

Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?

(i) Displacement reaction

(ii) Precipitation reaction

(iii) Combination reaction

(iv) Double displacement reaction

a)

(a) (i) only

b)

(b) (ii) only

c)

(c) (iv) only

d)

(d) (ii) and (iv)

19.

Determine the two products when Na3PO4 reacts with SnO2.

a)

NaO and SnPO4

b)

Na2O and Sn(PO4)2

c)

Na2O and Sn3PO4

d)

Na2O and Sn3(PO4)4

20.

Determine the products when FeCO3 and AgOH mix.

a)

Fe(OH)3 and Ag2CO3

b)

Fe(OH)2 and Ag2CO3

c)

Fe(OH)2 and AgCO3

d)

Fe(OH)3 and AgCO3

21.

When ammonium dichromate reacts with zinc nitride, what are the products?

a)

zinc nitrate and ammonium chromate

b)

zinc dichromate and ammonium nitrate

c)

zinc chromate and ammonium nitride

d)

zinc dichromate and ammonium nitride

22.

___ Na2CO3 + ___ Ag3P → ___ Na3P + ___ Ag2CO3

a)

3, 2, 1, 3

b)

2, 2, 2, 3

c)

3, 2, 2, 3,

d)

3, 2, 3, 2

23.

Pick the products when KMnO4 reacts with Al2S3 mix.

a)

K2S

b)

AlMnO4

c)

Al(MnO4)3

d)

KS2

24.

Predict the products when sodium chlorate reacts with barium hydroxide.

a)

NaOH and BaClO3

b)

NaOH and Ba(ClO4)2

c)

Na2OH and Ba(ClO3)2

d)

NaOH and Ba(ClO3)2

25.

____ Cu(OH)2 + ____ (NH4)3P → ____ Cu3P2 + ____ NH4OH

a)

1, 1, 1, 3

b)

3, 1, 1, 3

c)

3, 2, 1, 6

d)

3, 1, 1, 6

26.

____ PbS2 + ____ K3PO4 →____ Pb3(PO4)4 + ____ K2S

a)

3, 2, 1, 3

b)

3, 4, 1, 6

c)

3, 4, 1, 2

d)

3, 2, 1, 2

27.

____ (NH4)2SO4 + ____ AgNO3 → ____ NH4NO3 + ____ Ag2SO4

a)

1, 2, 2, 1

b)

1, 1, 1, 1

c)

1, 1, 2, 1

d)

2, 2, 2, 1

28.

Which products result from nickel II chromate reacting with potassium sulfate?

a)

NiSO4

b)

K2Cr2O7

c)

Ni2SO4

d)

K2CrO4

29.

Predict the products:

NaOH + Fe(NO3)3 →

a)

NaFe + OH(NO3)3

b)

Na(NO3)2 + Fe(OH)3

c)

NaOH + Fe(NO3)3

d)

NaNO3 + Fe(OH)3

30.

Predict the products:

KOH + H3PO4 →

a)

K3PO4 + HOH

b)

KH3 + OHPO4

c)

KOH + H3PO4

d)

KPO4 + H3OH

31.

Predict the products:

Mg(NO3)2 + CaCl2 →

a)

Mg(NO3)2 + CaCl2

b)

MgCa + Cl2(NO3)2

c)

Ca(NO3)2 + MgCl2

d)

CaNO3 + MgCl

32.

Predict the products

Ba(NO3)2 + K2CO3 →

a)

BaNO3 + KCO3

b)

CO3NO3 + KBa

c)

BaCO3 + K2NO3

d)

BaCO3 + KNO3

33.

____ Pb(NO3)2 + ____ Ca3P2 → ____ Pb3P2 + ____ Ca(NO3)2

a)

1, 1, 1, 1

b)

3, 3, 1, 3

c)

3, 1, 1, 3

d)

3, 1, 1, 1

34.

What are the correct products when fluorine gas mixes with ammonium chloride?

a)

F2 + NH4Cl

b)

Cl2 + NH4F2

c)

Cl + NH4F

d)

Cl2 + NH4F

35.

Balance: ____ Al + ____ ZnCO3 → ____ Zn + ____ Al2(CO3)3

a)

1, 1, 2, 2

b)

2, 3, 3, 1

c)

2, 1, 1, 1

d)

2, 3, 1, 1

36.

What are the products when copper II chloride reacts with magnesium metal?

a)

Cu + MgCl2

b)

Cu2 + MgCl2

c)

Cu + MgBr2

d)

Cu + MgCl

37.

Balance: ____ Al2(SO4)3 + ____ Sn → ____ Al + ____ Sn(SO4)2

a)

1, 1, 1, 1

b)

1, 3, 2, 1

c)

2, 3, 4, 3

d)

2, 2, 2, 3

38.

Fe + Ag2CrO4 react. What are the products?

a)

Ag + Fe2CrO4

b)

Ag + Fe(CrO4)3

c)

Ag + FeCrO4

d)

Ag + Fe3CrO4

39.
4Si + S8 --> 2Si2S4
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
40.
3Ca + 2AlCl3 --> 3CaCl2 + 2Al
a)
Synthesis
b)
Decomposition
c)
Single diplacement
d)
Double displacement
41.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Double displacement
42.
2Pb(NO3)2 --> 2PbO + 4NO2 + O2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
43.
3Mg + N2 --> Mg3N2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
44.
2NO2 --> N2 + 2O2
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Combustion
45.
P4 + 3O2 --> 2P2O3
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
46.
Fe + H2SO4 --> Fe2(SO4)3 + H2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
47.
Which reaction type is the following: C5H10O4 + O2 --> CO2 + H2O
a)
Decomposition
b)
Single Replacement
c)
Combustion
d)
Double Replacement
48.
Which of the following is the general formula for a decomposition reaction?
a)
A + B  → AB
b)
AB → A + B
c)
AB + C → AC + B
d)
AB + CD → AC + BD
49.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
50.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
51.
Balance this equation:
 __Li + __Cl2 -> __LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li +  Cl2 -> 2LiCl
52.
C4H12 + O2 --> CO2 + H2O
a)
Synthesis
b)
Combustion
c)
Single Replacement
d)
Double Replacement
53.
H2SO4 + Fe -->H2 + FeSO4
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
54.
PbCl2 + AgNO3 ---> Pb(NO3)2 + AgCl 
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
55.
NH3 + HCl ---> NH4Cl 
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
56.
Which chemical reaction switches 2 elements?
a)
Double Replacement
b)
Single Replacement
c)
Combustion
d)
Decomposition
57.
Which chemical reaction takes place when 2 substances react to form a single product?
a)
Decomposition
b)
Double Replacement
c)
Single Replacement
d)
Synthesis
58.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction
59.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
60.
a substance that is formed as the result of a chemical reaction
a)
Product 
b)
Reactant
c)
Starters
d)
Enders
61.
an atom or molecule which has gained or lost one or more of its valence electrons
a)
Covalent Bond
b)
Chemical Formula
c)
Ion
d)
Compound
62.
a substance formed when two or more elements are chemically bonded together
a)
Element Soup
b)
Pure Element
c)
Ion
d)
Compound
63.
tells us the number of atoms of each element in a compound
a)
Coeffecient
b)
Exponent
c)
Chemical Formula
d)
Calculator
64.
both elements in a compound share a certain number of electrons
a)
Share Electrons
b)
Transfer Electrons
65.
one element loses an electron to another
a)
Share Electrons
b)
Transfer Electrons
66.
the symbolic representation of a chemical reaction
a)
Long Hand
b)
Short Hand
c)
Electron Configuration
d)
Chemical Equation
67.
type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound
a)
Double Displacement
b)
Single Displacement
c)
Synthesis
d)
Decomposition
68.
type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products
a)
Double Displacement
b)
Single Displacement
c)
Synthesis
d)
Decomposition
69.
type of reaction in which two or more elements combine to form a more complex compound
a)
Double Displacement
b)
Single Displacement
c)
Synthesis
d)
Decomposition
70.
type of reaction in which a compound is broken down into its simple elements
a)
Double Displacement
b)
Single Displacement
c)
Synthesis
d)
Decomposition

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