Grade 9 Science: Classification of Chemical Reactions
This worksheet helps Grade 9 students understand and classify different types of chemical reactions, including synthesis, decomposition, single displacement, double displacement, and combustion.
Includes
Standards
Classification of Chemical Reactions
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Read each question carefully and provide the best answer. Show all your work for calculations.
1. In which type of reaction do two or more reactants combine to form a single product?
Decomposition
Synthesis
Single Displacement
Double Displacement
2. Which of the following is a characteristic of a combustion reaction?
It always produces hydrogen gas.
It involves the breaking down of a compound.
It typically involves a rapid reaction with oxygen, producing heat and light.
It always forms a precipitate.
3. A chemical reaction where a single compound breaks down into two or more simpler substances is called a reaction.
4. In a reaction, the ions of two compounds exchange places in an aqueous solution to form two new compounds.
5. All decomposition reactions require an input of energy.
True
False
6. A single displacement reaction always involves a metal replacing a nonmetal.
True
False
7. Balance the following chemical equation and classify its type:
Fe + O₂ → Fe₂O₃
8. Describe the general form of a double displacement reaction and provide one example.
Match the reaction type with its general equation.
9. Synthesis
a. AB → A + B
10. Decomposition
b. A + BC → AC + B
11. Single Displacement
c. AB + CD → AD + CB
12. Double Displacement
d. A + B → AB