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Which substance is chemically made of one kind of atoms?

Answer and explanation

Correct answer: Hydrogen

Hydrogen is an element, so it consists of only hydrogen atoms. Water is a compound because it contains both hydrogen and oxygen, whereas salt water and brass are mixtures. Exam tip: a pure substance made of only one kind of atom is an element.

Related tags

ChemistryNature Of MatterElementsAtomsPure SubstancesClass 11Some Basic Concepts Of ChemistryClass 11 Mcq

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