Types of Reactions — Unit test Answers

4 verified answers
1
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In which two types of reactions do opposite chemical changes occur?

A
double replacement and combustion
B
single replacement and double replacement
C
synthesis and decomposition
D
combustion and synthesis
2
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Which equation is a decomposition reaction?

A
Li2CO3 Li2O + CO2
Option A
B
Zn + HCl ZnCl2 + H2
Option B
C
Na2O + CO2 Na2CO3
Option C
D
C6H12O6 + O2 CO2 + H2O
Option D
3

If a substance reacts with oxygen, the chemical reaction is most likely a

A
combustion reaction.
B
decomposition reaction.
C
single replacement reaction.
D
double replacement reaction.
4

Chemists use activity series to determine whether which type of reaction will occur?

A
combustion
B
double replacement
C
decomposition
D
single replacement

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