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A pure substance formed by chemical combination of two elements is called what?

Answer and explanation

Correct answer: Compound

The governing concept is the distinction between chemical combination and physical mixing. When two or more elements combine chemically in a definite proportion, their atoms form a new pure substance with properties different from those of the original elements. Such a substance is called a compound, so option C is correct. For example, hydrogen and oxygen combine chemically to form water, whose properties differ from both gases. A mixture in option A contains substances physically combined in variable proportions and can often be separated by physical methods. A solution in option D is a type of homogeneous mixture, not necessarily a chemically formed substance. Metal in option B describes a broad class of elements, not the product of chemical combination of two elements.

Related tags

ChemistryNature-Of-MatterCompoundsNature Of MatterSome Basic Concepts Of ChemistryClass 11 Mcq

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