Define solute and solvent, and give an example in a salt solution.

• A. Solvent dissolves the solute; solute is the substance dissolved (e.g., water is the solvent and NaCl is the solute in a salt solution).
• B. Solute dissolves the solvent; solvent is the substance dissolved.
• C. The solvent is always a solid; the solute is always water.
• D. The solute and solvent are the same substance.

Answer: (A)