Decomposition Reactions
Try these practice questions!
- 1.
2HgO → 2Hg + O2 is an example of a decomposition reactions
- A.
True
- B.
False
Correct Answer
A. True -
- 2.
When water decomposes (2H2O --> 2H2 +O2) what two elements are produced
- A.
Oxygen in the form of a liquid and Hydrogen in the form of gas
- B.
Oxygen and Hydrogen in a liquid form
- C.
Oxygen in the form of a gas and hydrogen in liquid form
- D.
Oxygen and Hydrogen in the form of gases
Correct Answer
D. Oxygen and Hydrogen in the form of gases -
- 3.
Heat and electricity are methods used to synthesise compounds
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Heat and electricity are two methods used to decompose compoundsRate this question:
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- 4.
2N2O5 → O2 + 4NO2 Is what type of chemical reaction
- A.
Synthesis
- B.
Decomposition
- C.
Single Displacement
- D.
Double Displacement
- E.
Combustion
Correct Answer
B. Decomposition -
- 5.
Decomposition reactions make _______ compounds.
- A.
Larger
- B.
Simpler
Correct Answer
B. Simpler -
- 6.
Mg(NO3)2 → Mg(NO2)2 + O2 Is what type of chemical reaction
- A.
Synthesis
- B.
Decomposition
- C.
Single Displacement
- D.
Double Displacement
- E.
Combustion
Correct Answer
B. Decomposition -
- 7.
C10H8 + 12 O2 ---> 10 CO2 + 4 H2O is what type of chemical reaction
- A.
Synthesis
- B.
Decomposition
- C.
Neither
Correct Answer
C. Neither -
- 8.
2Na + I2 → 2NaI Is what type of chemical reaction
- A.
Synthesis
- B.
Decomposition
- C.
Single Displacement
- D.
Double Displacement
- E.
Combustion
Correct Answer
A. Synthesis -
- 9.
2N2O5 → O2 + 4NO2 Is what type of chemical reaction
- A.
Synthesis
- B.
Decomposition
- C.
Single Displacement
- D.
Double Displacement
- E.
Combustion
Correct Answer
B. Decomposition -
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Current Version
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Mar 21, 2022Quiz Edited by
ProProfs Editorial Team -
Oct 04, 2011Quiz Created by
Zach88
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