Question

what is a pure substance in chemistry grade 7 definition (not from internet please help)​

Answer 1

Explanation:

A pure substance is a single substance on its own

sample of matter with both definite and constant composition and distinct chemical properties. To avoid confusion, a pure substance is often referred to as a "chemical substance."

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Answer 2

Answer:

the elements which are made up of no mixtures only simple organic substances or just made up of one single compound is known as pure substance

Explanation:

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