Refer to the oxidation-reduction reaction below.
Fe + Cu²⁺ $\rightarrow$ Cu + Fe²⁺
This reaction occurs spontaneously when a strip of iron metal is placed into a solution of copper sulfate dissolved in water.During the reaction, iron metal is oxidized to form a cation, and copper ion is reduced to form copper metal.Which statement describes the change taking place?

Question

Refer to the oxidation-reduction reaction below.
Fe + Cu²⁺

\rightarrow

Cu + Fe²⁺
This reaction occurs spontaneously when a strip of iron metal is placed into a solution of copper sulfate dissolved in water.During the reaction, iron metal is oxidized to form a cation, and copper ion is reduced to form copper metal.Which statement describes the change taking place?

Quizplus · Accepted Answer

A chemical change involves a rearrangement of atoms resulting in the formation of different substances. In this reaction, iron metal is oxidized to form a cation (Fe2+) and copper ion is reduced to form copper metal, which are different chemically from the reactants. Therefore, the change is a chemical change. The fact that it occurs spontaneously (choice D) and that there is no overall change in mass (choice E) are also characteristics of chemical changes, but are not the best choices because they do not directly address the chemical nature of the reaction. Choices A and B are incorrect because chemical changes can involve covalent or ionic bonds, and there is no minimum number of elements required for a chemical change to occur.

Refer to the Oxidation-Reduction Reaction Below →\rightarrow→ Cu + Fe2+ This Reaction Occurs Spontaneously When a Strip

Refer to the Oxidation-Reduction Reaction Below $\rightarrow$ Cu + Fe²⁺
This Reaction Occurs Spontaneously When a Strip