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WorksheetsChemical Reactions and Equations
Total questions: 34
Worksheet time: 43mins
Name
Class
Date
1.
In the equation,
2Mg + O2 ---> 2MgO, which are the reactants?
2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
2.
Balance this equation,
Ca + H2O --> CaO + H2
Ca + H2O --> CaO + H2
a)
Ca + 2H2O --> CaO + 2H2
b)
2Ca + H2O --> CaO + H2
c)
Its balanced as it is
d)
Cannot be balanced
3.
Balance this equation,
Al2O3 ---> Al + O2
Al2O3 ---> Al + O2
a)
Cannot be balanced
b)
2Al2O3 ---> 2Al + 3O2
c)
2Al2O3 ---> 4Al + 3O2
d)
3Al2O3 ---> 2Al + O2
4.
Name this reaction, Cl2 + 2KI --> I2 + 2KCl
a)
Synthesis
b)
Single Replacement
c)
Double Replacement
d)
Decomposition
5.
Predict this reaction,
K2O + H2O --> ?
K2O + H2O --> ?
a)
KO2 + H2O
b)
KH2O
c)
K2OH2O
d)
2KOH
6.
Name this reaction,
CO2 + H2O --> H2CO3
CO2 + H2O --> H2CO3
a)
Decomposition
b)
Single Replacement
c)
Synthesis
d)
Combustion
7.
Write a balanced reaction of,
Magnesium burns....
Magnesium burns....
a)
2Mg + 3O2 --> 3MgO
b)
Mg + H2O -- MgH
c)
2Mg + CO2 -- MgCO2
d)
2Mg + O2 --> 2MgO
8.
Predict this reaction,
HCl (aq) + RbOH (aq) --> ?
HCl (aq) + RbOH (aq) --> ?
a)
RbCl (aq) + H2O (l)
b)
RbCl (l) + H2O (aq)
c)
no reaction
d)
2RbCl (s) + H2O (g)
9.
What does the (s) stand for in MgCO3 (s)
a)
soluble
b)
salty
c)
insoluble
d)
gas
10.
What does the (aq) stand for in NaCl (aq)?
a)
solid
b)
aqueous
c)
liquid
d)
gas
11.
Predict this reaction,
Ca + 2HCl --> ?
Ca + 2HCl --> ?
a)
4CaCl3 + H2
b)
no reaction
c)
CaH2 + Cl
d)
CaCl2 + H2
12.
Predict this reaction, I2 + CuCl --> ?
a)
Cl2 + CuI
b)
I2 CuCl
c)
no reaction
d)
ICl + Cu
13.
Decomposition of an oxyacid produces a ...
a)
non-metal oxide and hydrogen
b)
non-metal oxide and water
c)
water and hydrongen
d)
carbon dioxide and water
14.
Predict this reaction, Ba(OH)2 --> ?
a)
H2O +2Ba
b)
Ba + OH
c)
BaO + H2O
d)
OH + 4Ba
15.
Which of the following equations is balanced?
a)
2H2 + O2 ---> H2O
b)
H2 + 2O2 ---> 2H2O
c)
H2 + O2 ---> H2O
d)
2H2 + O2 ---> 2H2O
16.
Which coefficient will balance the following equation?
Zn + ___ HCl --> ZnCl2 + H2
Zn + ___ HCl --> ZnCl2 + H2
a)
2
b)
6
c)
4
d)
3
17.
Balance this equation:
Al2O3 -> Al + O2
Al2O3 -> Al + O2
a)
2Al2O3 -> 2Al + 3O2
b)
2Al2O3 -> 4Al + 3O2
c)
3Al2O3 -> 2Al + O2
d)
2Al2O3 -> 3Al + 2O2
18.
Identify the correct coefficients to balance this equation:
___ Zn + ___ O2 --> ___ ZnO
___ Zn + ___ O2 --> ___ ZnO
a)
2, 1, 2
b)
1, 2, 1
c)
4, 2, 4
d)
2, 2, 1
19.
Identify the correct coefficients to balance this equation:
___ N2 + ___ H2 --> ___ NH3
___ N2 + ___ H2 --> ___ NH3
a)
2, 3, 2
b)
1, 3, 1
c)
1, 3, 2
d)
1, 2, 3
20.
Identify the correct coefficients to balance this equation:
_ Fe + _ H2O -> _ Fe3O4 + _ H2
_ Fe + _ H2O -> _ Fe3O4 + _ H2
a)
3, 2, 1, 4
b)
3, 4, 1, 2
c)
3, 2, 4, 1
d)
3, 4, 1, 4
21.
What type of chemical reaction is this one?
Al(OH)3 --> Al2O3 + H2O
Al(OH)3 --> Al2O3 + H2O
a)
Decomposition
b)
Double Replacement
c)
Synthesis
d)
Single Replacement
22.
__ Al + __ FeO → __Al2O2 + __ Fe
a)
1,1,2,2
b)
2,1,2,1
c)
2,2,1,2
d)
2,4,2,1
23.
AB + CD ---> CB + AD
a)
Single Replacement
b)
Double Replacement
c)
Double Replacement
d)
Synthesis
24.
Balance this equation,
Ca + H2O --> Ca(OH)2 + H2
Ca + H2O --> Ca(OH)2 + H2
a)
Ca + 2H2O --> Ca(OH)2 + 2H2
b)
2Ca + H2O --> Ca(OH)2 + H2
c)
Its balanced as it is
d)
2Ca + 2H2O --> Ca(OH)2 + H2
25.
Balance this equation...
Sb2S3 + O2 --> Sb + SO2
Sb2S3 + O2 --> Sb + SO2
a)
It is balanced
b)
Sb2S3 + 3O2 --> 2Sb + 3SO2
c)
Sb2S3 + O2 --> 2Sb + SO2
d)
I don't know...Oh well!
26.
What category does the following equation belong in?
Cl2 + NaBr --> NaCl + Br2
Cl2 + NaBr --> NaCl + Br2
a)
double replacement
b)
single replacement
c)
decomposition
d)
synthesis
27.
CaCO3 --> CaO + CO2
is a ___ reaction.
is a ___ reaction.
a)
Decomposition
b)
Synthesis
c)
Replacement
d)
a closed system
28.
Classify the following chemical reaction:
4P +5O2 --> P4O10
4P +5O2 --> P4O10
a)
single replacement
b)
double replacement
c)
synthesis
d)
decomposition
29.
Predict the products for the this reaction:
Mg + CuCl2 -->
Mg + CuCl2 -->
a)
MgCl2 + Cu
b)
MgCl + Cu
c)
MgCu + Cl2
d)
CuMg + Cl2
30.
Which type of chemical reaction is this?
P4O6 + 6H2O --> 4H3PO3
P4O6 + 6H2O --> 4H3PO3
a)
synthesis
b)
decomposition
c)
combustion
d)
double displacement
31.
Which type of chemical reaction is this?
2C2H6 + 5O2 --> 4CO2 + 6H2O
2C2H6 + 5O2 --> 4CO2 + 6H2O
a)
single displacement
b)
double displacement
c)
combustion
d)
synthesis
32.
Predict the following 2Rb + 2H2O -> _?
a)
H2 + 2RbOH
b)
H2
c)
2RbOH
d)
OH
33.
Balanced equation for ferrous nitrate reacting with stannic phosphate
a)
6Fe(NO3)2 + Sn3(PO4)4 –––> 3Sn(NO3)4 + 2Fe3(PO4)2
b)
Fe(NO3)2 + Sn3(PO4)4 ––––> Sn(NO3)4 + Fe3(PO4)2
c)
3Fe(NO3)2 + Sn3(PO4)4 ––––> 3Sn(NO3)4 + Fe3(PO4)2
d)
2Fe(NO3)2 + Sn3(PO4)4 ––––> Sn(NO3)4 + 2Fe3(PO4)2
34.
Which represents the balanced equation for burning propane, C3H8?
a)
C3H8 + 5O2 ––––> 3CO2 + 4H2O
b)
C3H8 + O2 ––––> CO2 + H2O
c)
C3H8 + O2 ––––> 3CO2 + H2O
d)
C3H8 + O2 ––––> 3CO2 + 4H2O
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