Which statement correctly describes physical separation of a mixture?

Which statement correctly describes physical separation of a mixture?

• A. The chemical identities of the components remain unchanged.
• B. New substances are formed.
• C. The components lose all properties.
• D. The mixture becomes a pure substance.

Answer: (C)

The chemical identities remain unchanged during physical separation. This process uses differences in physical properties—like solubility, boiling point, or particle size—to separate components without breaking or forming chemical bonds. Because no chemical reactions occur, no new substances are produced and the original substances retain their characteristic properties. While you can sometimes end up with pure components after separation, the method itself is about isolating existing substances, not converting them into something new.

The chemical identities remain unchanged during physical separation. This process uses differences in physical properties—like solubility, boiling point, or particle size—to separate components without breaking or forming chemical bonds. Because no chemical reactions occur, no new substances are produced and the original substances retain their characteristic properties. While you can sometimes end up with pure components after separation, the method itself is about isolating existing substances, not converting them into something new.