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Balancing Chemical Equations Quiz Review

Total questions: 20

Worksheet time: 5hrs 0mins

Name
Class
Date
1.
Which problem is balanced?
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
2.
Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe
a)
Yes
b)
No
3.
Balance this equation
_Zn+_HCl-->_ZnCl+_H2
a)
1,1,2,1
b)
1,1,1,2
c)
1,2,1,1
d)
2,1,1,1
4.
Balance this equation.
_Mg + _Cl--> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
5.
Balance this equation-
__P+ __O--> __P2O3
a)
it is already balanced
b)
2, 1, 3
c)
1, 2, 3
d)
1, 3, 2
6.

_AgNO3+ _MgCl2 \rightarrow _AgCl + _Mg(NO3)2

a)

2, 1, 2, 1

b)

1, 2, 2, 1

c)

already balanced

d)

1, 1, 2, 1

7.

_Li2O + _H2O \rightarrow  _LiOH

a)

Already balanced

b)

1, 2, 1

c)

1, 1, 2

d)

2, 2, 4

8.

_Al+ _Fe2O3 \rightarrow  _Al2O3 + _Fe

a)

2, 1, 1, 2

b)

2, 2, 1, 2

c)

1, 2, 1, 1

d)

1, 1, 1, 2

9.

_KCl+ _O2 \rightarrow  _KClO3

a)

2, 3, 2

b)

1, 2, 1

c)

2, 3, 1

d)

1, 3, 2

10.

_Al4C3+ _H2O \rightarrow  _CH4 + _Al(OH)3

a)

1, 12, 3, 4

b)

1, 10, 2, 3

c)

1, 12, 2, 4

d)

1, 12, 3, 3

11.

_Al(OH)3+ _H2SO4 \rightarrow  _Al2(SO4)3+ _H2O

a)

2, 3, 1, 6

b)

2, 2, 1, 6

c)

2, 3, 1, 5

d)

2, 1, 1, 4

12.

_Al2O3 \rightarrow  _Al+ _O2

a)

2, 4, 3

b)

2, 2, 3

c)

4, 8, 6

d)

2, 4, 2

13.

_FeCl3+ _H2SO4 \rightarrow  _Fe2(SO4)3+ _HCl

a)

2, 3, 1, 6

b)

2, 2, 1, 6

c)

2, 2, 1, 5

d)

2, 3, 1, 5

14.
Balance this equation.
_CH4 + _O--> _CO+ _H2O
a)
1,2,1,1
b)
2,1,2,1
c)
1,2,1,2
d)
0,2,0,2
15.
Balance this equation.
_SnO+_H2-->_Sn +_H2O
a)
1,1,2,1
b)
1,2,1,1
c)
1,2,1,2
d)
1,2,2,1
16.
Balance this equation.
_CF+ _Br-- _CBr+ _F2
a)
2,1,2,1
b)
1,2,2,1
c)
1,2,1,2
d)
2,2,2,2
17.

Translate the word equation below.

Carbon Dioxide and Hydrogen react to form Methane (CH4) and Water

a)

CO2 + H2O  CH4 +H2 CO_{2_{\ }}+\ H_2O\ \rightarrow\ CH_4\ +H_2\

b)

CO2  H2 + CH4 + H2OCO_2\ \rightarrow\ H_2\ +\ CH_4\ +\ H_2O

c)

CO2  + H2 + CH4   H2OCO_2\ \ +\ H_2\ +\ CH_4\ \ \rightarrow\ H_2O

d)

CO2  + H2  CH4 + H2OCO_2\ \ +\ H_2\ \rightarrow\ CH_4\ +\ H_2O

18.

Which is the correct chemical equation for the following: Barium Chloride combined with sodium sulfide yields barium sulfide and sodium chloride

a)

BaCl + NaS → BaS+ NaCl

b)

BaCl2 + Na2S → BaS+ NaCl

c)

BaS+ NaCl → BaCl + NaS

d)

BaCl2 + Na2S → BaS+ NaCl2

19.

Solid aluminum metal is dropped into an aqueous nickel (II) chloride solution. The products from this reaction are aluminum chloride and solid nickel metal.

a)

2Al(s) + 3NiCl2 (aq) \rightarrow  2AlCl3(aq) + 3Ni(s)

b)

2Al(s) + 2NiCl2 (aq) \rightarrow  AlCl3(aq) + 2Ni(s)

c)

2Al(s) + NiCl2 (aq) \rightarrow  AlCl3(aq) + Ni(s)

d)

2Al(s) + 3NiCl (aq) \rightarrow  2AlCl(aq) + 3Ni(s)

20.

Solid potassium chlorate, when heated, yields solid potassium chloride and oxygen gas.

a)

2KClO3(s)  Δ \overrightarrow{\ \Delta\ }   2KCl(s) + 3O2(g)

b)

KClO3(s)  Δ \overrightarrow{\ \Delta\ }   KCl(s) + O2(g)

c)

KClO3(s)  Δ \overrightarrow{\ \Delta\ }   2KCl(s) + 3O2(g)

d)

2KClO3(s)  Δ \overrightarrow{\ \Delta\ }   2KCl(s) + 3O(g)