Distinguishing chemistry terms in mixtures and filtration

Steps:

• Define key terms: filtrate (liquid passing through filter), saturated solution (maximum solute dissolved), solute (dissolved substance), solution (homogeneous mixture).
• Check option A: Filtrate flows through, not stays on paper.
• Check options B and C: B mislinks saturation to bonds; C reverses solute-solvent roles.
• Verify D: Solutions are mixtures, lacking purity of single substances.

Why D is correct:

• A solution is a homogeneous mixture of solute and solvent, not a pure substance (element or compound) per chemistry definitions.

Why the others are wrong:

• A: Filtrate passes through filter paper; residue remains on it.
• B: Saturation means maximum solute in solvent, unrelated to bond types.
• C: Solute dissolves in solvent; solvent dissolves solute.

Final answer: D