Question

a chemical reaction in which compounds break up into simpler constituents is a ______ reaction.

a) substitution
b) combination
c) decomposition
d) double replacement

Explanation:

Analyze the definition

The question asks for a type of chemical reaction where compounds break up into simpler constituents.

Evaluate the options

• Substitution: A reaction where an atom or group is replaced by another.
• Combination: A reaction where two or more substances combine to form a single product.
• Decomposition: A reaction where a single compound breaks down into two or more simpler substances.
• Double replacement: A reaction where two compounds exchange ions to form two new compounds.

Match with the definition

The process of breaking up into simpler constituents matches the definition of a decomposition reaction.

Answer:

• A) substitution
• B) combination
• C) decomposition (Correct answer)
• D) double replacement