Which statement best compares pure substances to mixtures?
Pure substances contain small amounts of impurities. Mixtures contain large amounts of
impurities.
Pure substances must be made of two chemical materials. Mixtures can be made of only one
chemical material.
Pure substances are either compounds or elements. Mixtures are homogeneous or
heterogeneous combinations.
Pure substances are liquids dissolved in liquids or gases dissolved in gases. Mixtures are
gases dissolved in liquids or solids dissolved in liquids.
