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WorksheetsIdentifying Chemical Reactions
Total questions: 39
Worksheet time: 18mins
Name
Class
Date
1.
What is this reaction?
Zn + HCl --> ZnCl2 + H2
Zn + HCl --> ZnCl2 + H2
a)
decomposition
b)
single replacement
c)
synthesis
d)
double replacement
2.
What is this reaction?
N2 + O2 + H2O --> HNO3
N2 + O2 + H2O --> HNO3
a)
single replacement
b)
double replacement
c)
synthesis
d)
combustion
3.
What is this reaction?
NaCl+AgNO3>NaNO3+AgCl
NaCl+AgNO3>NaNO3+AgCl
a)
single replacement
b)
double replacement
c)
synthesis
d)
decomposition
4.
What is this reaction?
Zn + CuCl2--> ZnCl2 + Cu
Zn + CuCl2--> ZnCl2 + Cu
a)
synthesis
b)
single replacement
c)
double replacement
d)
decomposition
5.
What reaction is this?
H2CO3--> H2O + CO2
H2CO3--> H2O + CO2
a)
synthesis
b)
decomposition
c)
single replacement
d)
combustion
6.
What is this reaction?
H2SO3--> H2O + SO3
H2SO3--> H2O + SO3
a)
synthesis
b)
decomposition
c)
single replacement
d)
combustion
7.
What reaction is this?
Na + Cl --> NaCl
Na + Cl --> NaCl
a)
single replacement
b)
decomposition
c)
synthesis
d)
double replacement
8.
What reaction is this?
Zn + I2 --> ZnI2
Zn + I2 --> ZnI2
a)
synthesis
b)
decomposition
c)
single replacement
d)
combustion
9.
What reaction is this?
Fe2O3 + C --> Fe + CO2
Fe2O3 + C --> Fe + CO2
a)
synthesis
b)
double replacement
c)
decomposition
d)
single replacement
10.
In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
11.
What type of chemical reaction is this one?
Al(OH)3 --> Al2O3 + H2O
Al(OH)3 --> Al2O3 + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement
12.
What type of chemical reaction is this one?
CUO + CO2 --> CuCO3
CUO + CO2 --> CuCO3
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement
13.
What type of chemical reaction is this one?
Ca + MgCl2 --> CaCl2 + Mg
Ca + MgCl2 --> CaCl2 + Mg
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement
14.
The left side of the equation below is called
a)
Products
b)
Reactants
15.
The right side of the equation below is called the
a)
products
b)
reactants
16.
What type of reaction is illustrated below?
2HI --> H2 + I2
2HI --> H2 + I2
a)
synthesis
b)
decomposition
c)
single replacement
d)
double replacement
17.
A + B > AB What type of chemical reaction is this?
a)
single
b)
double
c)
synthesis
d)
decomposition
18.
What type of chemical reaction is this one?
Al(OH)3 --> Al2O3 + H2O
Al(OH)3 --> Al2O3 + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement
19.
What type of chemical reaction is this one?
CUO + CO2 --> CuCO3
CUO + CO2 --> CuCO3
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement
20.
What type of chemical reaction is this one?
Ca + MgCl2 --> CaCl2 + Mg
Ca + MgCl2 --> CaCl2 + Mg
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement
21.
What type of chemical reaction is this one?
C2H2 + O2 --> CO2 + H2O
C2H2 + O2 --> CO2 + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement
22.
The equation AX → A + X is the general equation for a
a)
single-displacement reaction
b)
combustion reaction
c)
decomposition reaction
d)
synthesis reaction
23.
The equation A + BX → AX + B is the general equation for a
a)
combustion reaction
b)
single-displacement reaction
c)
double-displacement reaction
d)
decomposition reaction
24.
The equation AX + BY → AY + BX is the general equation for a
a)
synthesis reaction
b)
decomposition reaction
c)
single-displacement reaction
d)
double-displacement reaction
25.
The equation Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g) is an example of which type of reaction?
a)
combination reaction
b)
double-replacement reaction
c)
decomposition reaction
d)
single-replacement reaction
26.
The equation H3PO4 + 3KOH → K3PO4 + 3H2O is an example of which type of reaction?
a)
double-replacement reaction
b)
decomposition reaction
c)
single-replacement reaction
d)
combination reaction
27.
The equation A + X → AX is the general equation for a(n)
a)
double-displacement reaction
b)
combustion reaction
c)
synthesis reaction
d)
ionic reaction
28.
a starting substance in a chemical reaction
a)
reactants
b)
products
29.
a new substance formed in a chemical reaction
a)
reactants
b)
products
30.
a reaction in which a single compound is broken down into simpler substances
a)
activity series of metals
b)
single-replacement reaction
c)
combustion reaction
d)
decomposition reaction
31.
Type of reaction?
NO2 --> N2 + O2
NO2 --> N2 + O2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
32.
Type of reaction? Mg + N2 --> Mg3N2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
33.
Type of reaction? Si + S8 --> Si2S4
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
34.
Type of reaction?
Ca + AlCl3 -> CaCl2 +Al
Ca + AlCl3 -> CaCl2 +Al
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
35.
Type of reaction? KOH + H3PO4 --> K3PO4 + H2O
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
36.
What are the reactants in the following chemical equation?
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
H2
b)
O2
c)
2H2 + O2
d)
2H2O
37.
What are the products in the following chemical equation?
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
H2
b)
O2
c)
2H2 + O2
d)
2H2O
38.
On the left side of a chemical reaction are the ....
a)
Reactants
b)
Products
39.
On the right side of a chemical reaction are the ....
a)
Reactants
b)
Products
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