Answer
A pure substance is one composed entirely of one kind of atom or molecule.
Work Step by Step
Pure substances can be made up entirely of one element, or of multiple elements bonded into one molecule.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.