Chemical Reaction Classification Practice Test

Identify the Types of Chemical Reactions

By
Todd Helmenstine
Todd Helmenstine
Todd Helmenstine is a science writer and illustrator who has taught physics and math at the college level. He holds bachelor's degrees in both physics and mathematics.
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Updated on February 24, 2019

There are many different types of chemical reactions. There are single and double displacement reactions, combustion reactions, decomposition reactions, and synthesis reactions.

See if you can identify the type of reaction in this ten question chemical reaction classification practice test. Answers appear after the final question.

Question 1

Gloved hand pouring liquid into beaker from test tube
It's important to be able to recognize the major types of chemical reactions. Comstock/Getty Images

The chemical reaction 2 H2O → 2 H2 + O2 is a:

  • a. synthesis reaction
  • b. decomposition reaction
  • c. single displacement reaction
  • d. double displacement reaction
  • e. combustion reaction

Question 2

The chemical reaction 2 H2 + O2 → 2 H2O is a:

  • a. synthesis reaction
  • b. decomposition reaction
  • c. single displacement reaction
  • d. double displacement reaction
  • e. combustion reaction

Question 3

The chemical reaction 2 KBr + Cl2 → 2 KCl + Br2 is a:

  • a. synthesis reaction
  • b. decomposition reaction
  • c. single displacement reaction
  • d. double displacement reaction
  • e. combustion reaction
Not all chemical reactions produce visible change, but bubbles, color, or temperature changes are common. It's a good idea to memorize the main types of chemical reactions.
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How Many Types of Chemical Reactions Are There?
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Question 4

The chemical reaction 2 H2O2 → 2 H2O + O2 is a:

Question 5

The chemical reaction Zn + H2SO4 → ZnSO4 + H2 is a:

Question 6

The chemical reaction AgNO3 + NaCl → AgCl + NaNO3 is a:

  • a. synthesis reaction
  • b. decomposition reaction
  • c. single displacement reaction
  • d. double displacement reaction
  • e. combustion reaction

Question 7

The chemical reaction C10H8 + 12 O2 → 10 CO2 + 4 H2O is a:

  • a. synthesis reaction
  • b. decomposition reaction
  • c. single displacement reaction
  • d. double displacement reaction
  • e. combustion reaction

Question 8

The chemical reaction 8 Fe + S8 → 8 FeS is a:

  • a. synthesis reaction
  • b. decomposition reaction
  • c. single displacement reaction
  • d. double displacement reaction
  • e. combustion reaction

Question 9

The chemical reaction 2 CO + O2 → 2 CO2 is a:

  • a. synthesis reaction
  • b. decomposition reaction
  • c. single displacement reaction
  • d. double displacement reaction
  • e. combustion reaction

Question 10

The chemical reaction Ca(OH)2 + H2SO4 → CaSO4 + 2 H2O is a:

  • a. synthesis reaction
  • b. decomposition reaction
  • c. single displacement reaction
  • d. double displacement reaction
  • e. combustion reaction

Answers

  1. b. decomposition reaction
  2. a. synthesis reaction
  3. c. single displacement reaction
  4. b. decomposition reaction
  5. c. single displacement reaction
  6. d. double displacement reaction
  7. e. combustion reaction
  8. a. synthesis reaction
  9. a. synthesis reaction
  10. d. double displacement reaction​
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Helmenstine, Todd. "Chemical Reaction Classification Practice Test." ThoughtCo, Apr. 5, 2023, thoughtco.com/chemical-reaction-classification-practice-test-604112. Helmenstine, Todd. (2023, April 5). Chemical Reaction Classification Practice Test. Retrieved from https://www.thoughtco.com/chemical-reaction-classification-practice-test-604112 Helmenstine, Todd. "Chemical Reaction Classification Practice Test." ThoughtCo. https://www.thoughtco.com/chemical-reaction-classification-practice-test-604112 (accessed April 26, 2024).