Question

a substance that could be separated into two or more substances only by a chemical change is a(n)

Answer 1

Answer:

Compound  

Explanation:

A compound is a substance that can be separated into two or more substances only by a chemical change.

For example, water is a compound.

We can separate it into hydrogen and oxygen by electrolysis.

$\rm 2H_{2}O \xrightarrow{\text{electrolysis}} 2{H}_{2} + O_{2}$