Question

question 5 of 10
which of the following best describes a double - replacement reaction?
a. atoms in one compound switch places with atoms in another compound.
b. a lone element takes the place of a different element in a compound.
c. two elements join together to form a new compound.
d. one compound splits up, forming two or more elements or new compounds.

Explanation:

• Option A: Double - replacement reactions involve the exchange of ions (or atoms in compounds) between two compounds. So atoms in one compound switching places with atoms in another compound fits this.
• Option B: This describes a single - replacement reaction, where a single element replaces another in a compound.
• Option C: This is a synthesis reaction, where two or more substances combine to form a new compound.
• Option D: This is a decomposition reaction, where a compound breaks down into simpler substances.

Answer:

A. Atoms in one compound switch places with atoms in another compound.