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Identifying Chemical Reactions

This worksheet helps students identify different types of chemical reactions, including synthesis, decomposition, single displacement, double displacement, and combustion.

Grade 8 Science ChemistryIdentifying Reactions
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Includes

Multiple ChoiceFill in the BlanksTrue / FalseShort AnswerMatching

Standards

MS-PS1-2

Topics

chemistrychemical reactionssynthesisdecompositiondisplacementcombustiongrade 8
7 sections · Free to use · Printable
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Identifying Chemical Reactions

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Read each question carefully and provide the best answer. Identify the type of chemical reaction described or shown.

1. Which type of reaction involves two or more reactants combining to form a single, more complex product?

a

Decomposition

b

Synthesis

c

Single Displacement

d

Combustion

2. The reaction 2KClO₃ → 2KCl + 3O₂ is an example of what type of reaction?

a

Synthesis

b

Decomposition

c

Double Displacement

d

Combustion

3. In a   reaction, an element reacts with a compound, displacing another element from the compound.

4. A reaction that involves a hydrocarbon reacting with oxygen to produce carbon dioxide and water is called a   reaction.

5. A double displacement reaction typically involves two ionic compounds exchanging ions to form two new compounds.

T

True

F

False

6. In a synthesis reaction, a single compound breaks down into two or more simpler substances.

T

True

F

False

7. Describe the key difference between a single displacement reaction and a double displacement reaction.

Match each reaction type with its general form.

8. Synthesis

 

a. AB → A + B

9. Decomposition

 

b. A + BX → AX + B

10. Single Displacement

 

c. AX + BY → AY + BX

11. Double Displacement

 

d. A + B → AB