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Balancing Chemical Equations
Test Description: Law of Conservation of Energy
Instructions: Answer all questions to get your test result.
1) The chemicals that are created in a chemical reaction.
A
Both
B
Neither
C
Products
D
Reactants
2) What kind of reaction is it? 4Fe + 3O2 → 2Fe2O3
A
Single Displacement
B
Decomposition
C
Double Displacement
D
Sythesis
3) What kind of reaction is it? NaS + ZnNO3 → NaNO3 + ZnS
A
Double Displacement
B
Single Displacement
C
Decomposition
D
Sythesis
4) What kind of reaction is it? 2KClO3 → 2KCl + 3O2
A
Double Displacement
B
Synthesis
C
Decomposition
D
Single Displacement
5) What kind of reaction is it? Mg + 2AgNO3 → Mg(NO3)2 + 2Ag
A
Decomposition
B
Double Displacement
C
Single Displacement
D
Synthesis
6) H2 + O2 -- H2O, What are the coefficients used to balance?
A
2, 2, 2
B
2, 0, 2
C
0, 2, 2
D
2, 1, 2
7) Fe + Cl2 -- FeCl3, what coefficients would balance the equation?
A
2, 3, 2
B
1, 1, 1
C
4, 2, 2
D
3, 2, 2
8) How many oxygens are in 2(NO3)
A
6
B
1
C
2
D
3
9) How many aluminums are in 2Al2O3
A
8
B
6
C
4
D
2
10) What slows or does not allow a chemical reaction to occur?
A
Endothermic
B
Inhibitor
C
Catalyst
D
Exothermic
*select an answer for all questions
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