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Quiz: Chemical Reactions
True/False
Indicate whether the statement is true or false.
F 1. In a chemical reaction, the products are found on
____
the left side of the arrow.
F 2. The coefficient of each element should be the
____
same on both sides of the equation.
T 3. Word equations use words to indicate reactants
____
and products of chemical reactions.
T 4. The arrow in a chemical equation means “ yields”.
____
C
____5.
In this equation, which are the reactant(s)?
a.
b.
Mg
MgO
c. Mg and O2
d. O2
____
B 6.Which is the name of the kind of solid
substance formed in this figure?
a. aqueous
c. coordinate
complex
b. precipitate
d. synthesis
D 7.
____
Which type of chemical reaction is shown?
a. double
replacement
b. combustion
c. synthesis
d. decomposition
A 8.How many total atoms are in 3 Na2SO4?
____
a. 21
c. 24
b. 10
d. 18
C 9.Which type of reaction can be recognized by
____
the general pattern
a. combustion
?
b. synthesis
c. single
replacement
d. decomposition
A
____10.Which
type of reaction is
Al + O2
Al2O3?
a. synthesis
c. single replacement
b. decomposition
d. combustion
D 11.Which types of reactions are essentially
____
opposites of one another?
a. combustion and synthesis
b. single replacement and double
replacement
c. synthesis and single replacement
d. synthesis and decomposition
A
____12.
Identify the type of chemical reaction
demonstrated by this equation:
KClO3
KCl + O2
a. decomposition
b. synthesis
c. combustion
d. single replacement
D
____13.
Which are the product(s) of this reaction?
Mg + N2
?
a. NMg
b. MgN2
c. Mg2N3
d. Mg3N2
C
____14.
What are the correct coefficients
when this equation is balanced?
Sb + O2
Sb4O6
a. 1, 2, 10
b. 4, 6, 1
c. 4, 3, 1
d. 10, 5, 1
C 15. What are the correct coefficients when
____
this equation is balanced?
K + Br2
KBr
a. 1, 1, 1
b. 1, 2, 1
c. 2, 1, 2
d. 2, 1, 1
D 16. What are the correct coefficients when
____
this chemical equation is balanced?
P4 + O2
P2O5
a. 4, 2, 7
b. 1, 1, 1
c. 2, 5, 4
d. 1, 5, 2

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