Page 277 - Science Course 3 (Book 1)

Mo7-L5: Lesson Review Quiz (Multiple Choice)

Direction: On the line before each question or statement, write the letter of the correct answer.

1. Which type of reaction is the opposite of a synthesis reaction?
A. decomposition
B. single-replacement
C. double-replacement

2. Which type of reaction contains only one reactant?
A. synthesis
B. decomposition
C. double-replacement

3. Which activity is a type of combustion reaction?
A. burning wood
B. breaking down water
C. formation of table salt

4. Which pair of reactions are considered to be opposites?
A. synthesis and decomposition
B. single-replacement and synthesis
C. decomposition and double-replacement
D. single-replacement and double-replacement

5. A reaction that has one reactant can only be a
A. synthesis reaction.
B. decomposition reaction.
C. single-replacement reaction.
D. double-replacement reaction.

6. What type of reaction must always have oxygen as a reactant?
A. synthesis
B. combustion
C. single-replacement
D. double-replacement

Mo7-L5: Lesson Review Quiz (Completion)

Direction: On each line, write the term from the word bank that correctly completes each sentence. Each
term is used only once.
decomposition double-replacement single-replacement synthesis

1. reactions occur when the negative ions in two compounds switch places and
two new compounds are formed.

2. Chemical reactions in which two or more substances combine to form one compound are called
reactions.

3. In a reaction, one element replaces another element in a compound.

4. In a reaction, two or more substances are formed when one compound
breaks down.

269