Question

what is pure substance?​

Answer 1

Answer:

A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Mixtures are physical combinations of two or more elements and/or compounds. Mixtures can be classified as homogeneous or heterogeneous.

Explanation:

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Answer 2

A pure substance is one which is made up of only one kind of particles either atoms or molecules.