Question

Which statement about pure substances and molecules is correct?(1 point)ResponsesPure substances cannot be molecules.Pure substances cannot be molecules.All pure substances are molecules.All pure substances are molecules.Molecules cannot be pure substances.Molecules cannot be pure substances.All molecules are pure substances.All molecules are pure substances.

Answer 1

The correct statement about pure substances and molecules is: "All molecules are pure substances."

To clarify:

• A pure substance is a material that has a uniform and definite composition. This includes elements and compounds.
• Molecules are a type of compound and consist of two or more atoms bonded together.

Thus, while not all pure substances are molecules (since pure substances can also be single elements), all molecules that are compounds are considered pure substances.