Solutions are not mistaken for pure substances. In fact, they are the opposite of pure substances. Here's why:

* Pure substances consist of only one type of molecule. For example, pure water is made only of H₂O molecules.

* Solutions are mixtures of two or more substances. These substances are uniformly dispersed, meaning the mixture is homogeneous. For example, saltwater is a solution of salt (NaCl) dissolved in water (H₂O).

Why the confusion?

The confusion might arise from the fact that solutions can appear very homogeneous. You can't easily see the individual components of salt dissolved in water. However, even though the components are evenly distributed, they are still distinct substances.

Key takeaway:

Solutions are homogeneous mixtures of two or more substances, while pure substances consist of only one type of molecule. They are fundamentally different.