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WorksheetsChemical Equations Review
Total questions: 20
Worksheet time: 25mins
Name
Class
Date
1.
Determine the type of reaction for the following:
2 K + FeCl2 → 2KCl + Fe
2 K + FeCl2 → 2KCl + Fe
a)
Single Replacement
b)
Double Replacement
c)
Synthesis
d)
Combustion
2.
Determine the type of reaction for the following:
2AgNO3 + Ca(OH)2→ Ca(NO3)2 + 2Ag2O
2AgNO3 + Ca(OH)2→ Ca(NO3)2 + 2Ag2O
a)
Single Replacement
b)
Double Replacement
c)
Synthesis
d)
Decomposition
3.
Determine the type of reaction for the following:
2CuI→ Cu + I2
2CuI→ Cu + I2
a)
Single Replacement
b)
Double Replacement
c)
Synthesis
d)
Decomposition
4.
AB + CD = AD + CB
a)
Double Replacement
b)
Single Replacement
c)
Combustion
d)
Decomposition
5.
When balanced, what are the coefficents for the following reaction:
H20 → H2 + O2
H20 → H2 + O2
a)
2:1:2
b)
2:1:1
c)
1:1:1
d)
2:2:1
6.
Classify
Fe + O2 → Fe2O3
Fe + O2 → Fe2O3
a)
synthesis
b)
decomposition
c)
double replacement
d)
single replacement
7.
Classify
FeS + HCl → H2S + FeCl2
FeS + HCl → H2S + FeCl2
a)
synthesis
b)
combustion
c)
single replacement
d)
double replacement
8.
How many hydrogen atoms are in this chemical formula:
a)
4 hydrogen atoms
b)
1 hydrogen atom
c)
2 hydrogen atoms
d)
3 hydrogen atoms
9.
_________________ are the elements and compounds that are in the beginning of a chemical reaction.
a)
Subscripts
b)
Coefficients
c)
Reactants
d)
Products
10.
___________________ are the elements or compounds that are produced in a chemical reaction.
a)
Subscripts
b)
Coefficients
c)
Reactants
d)
Products
11.
What is the arrow pointing to?
a)
coefficient
b)
subscript
c)
reactant
d)
product
12.
What are the arrows pointing to?
a)
coefficient
b)
subscript
c)
reactant
d)
product
13.
Fill in the blank:
The law of conservation of mass states that matter cannot be created nor __________________.
The law of conservation of mass states that matter cannot be created nor __________________.
a)
destroyed
b)
rearranged
c)
transferred
d)
changed
14.
Fill in the blank:
A __________________ chemical equation shows that the same number of atoms in the reactants are also in the product.
A __________________ chemical equation shows that the same number of atoms in the reactants are also in the product.
a)
balanced
b)
transferred
c)
rearranged
d)
beautiful
15.
The following chemical reaction occurs:
N2 + 3 H2 -> 2 NH3
How many atoms of hydrogen are there in the product?
N2 + 3 H2 -> 2 NH3
How many atoms of hydrogen are there in the product?
a)
3 atoms of hydrogen
b)
2 atoms of hydrogen
c)
6 atoms of hydrogen
d)
1 atom of hydrogen
16.
The following chemical equation occurs:
CH4 + 2O2 -> CO2 + 2H2O
Does this equation follow the law of conservation of mass? In other words, are there the same number of carbon, hydrogen, and oxygen atoms in the reactants and the products?
CH4 + 2O2 -> CO2 + 2H2O
Does this equation follow the law of conservation of mass? In other words, are there the same number of carbon, hydrogen, and oxygen atoms in the reactants and the products?
a)
Yes
b)
No
c)
You can't tell with the given information
17.
An element plus additional element reacts to form one product is an example of which type of chemical reaction?
a)
Decomposition
b)
double replacement
c)
synthesis
d)
single replacement
18.
Which type of reaction involves one element and one compound reacting?
a)
Decompostion
b)
double replacement
c)
synthesis
d)
single replacement
19.
A reaction in which two reactants switch to form a new product.
a)
Decompostion
b)
double replacement
c)
synthesis
d)
single replacement
20.
A reaction in which substances break down into its parts after a chemical reaction.
a)
Decompostion
b)
double replacement
c)
synthesis
d)
single replacement
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