Which of the following characteristics accurately differentiate pure substances from mixtures? — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

A is correct; pure substances have fixed stoichiometric ratios. B is correct; in mixtures, components retain their identities. C is correct; homogeneous mixtures (solutions) are uniform but can be separated physically (e.g., via distillation). D is incorrect; compounds can only be decomposed by chemical methods, not physical ones.