Separation methods involving vaporization

Steps:

• Method 1 (filtration) separates solids from liquids mechanically, no state change to gas.
• Method 2 (evaporation) turns liquid solvent into gas, leaving solute behind.
• Method 3 (distillation) boils liquid to gas vapor, then condenses it for separation.
• Method 4 (decantation) pours off liquid from solid, no phase change to gas.

Why C is correct:

• Evaporation and distillation both rely on the phase change from liquid to gas, as defined by vaporization processes in physical separation techniques.

Why the others are wrong:

• A includes filtration, which uses no gas phase.
• B includes filtration, which uses no gas phase.
• D includes decantation, which uses no gas phase.

Final answer: C