_________ are substances with constant composition that can be broken down into elements by chemical processes.

Question

Quizplus · Accepted Answer

Compounds are substances made up of two or more types of atoms that are chemically combined in a fixed ratio. They can be broken down into their constituent elements by chemical reactions, but not by physical means like filtration or evaporation. Solutions and mixtures are not compounds because they are not chemically combined, and heterogeneous mixtures can be separated into their components by physical means. Quarks are elementary particles that make up protons and neutrons, and are not compounds.

_________ Are Substances with Constant Composition That Can Be Broken