A substance formed by the chemical combination of two or more elements in a fixed or definite ratio is a(n)

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A compound is formed when two or more elements chemically combine in a fixed or definite ratio. In contrast, a mixture refers to a combination of substances that are not chemically combined and can vary in their proportions. A solution is a type of mixture where one substance (the solute) is dissolved in another substance (the solvent) at a molecular level. An element is a substance that cannot be broken down into simpler substances by chemical means. A gas is a state of matter, and does not necessarily refer to a specific substance or type of substance.

A Substance Formed by the Chemical Combination of Two or More